CONTRACTOR'S DESIGNATING LETTERS Contractor's prefix letters as assigned by the Bureau of Ships are used to designate the con­

tractor for the equipment. A list of Prefix Letters arranged alphabetically with the corresponding contractor is as follows:

T!Jpe No. T!Jpe No. preji.c Contractor preji.c Contractor

CA S. S. White Dental Co. CBT Speaker Co. , Chas. R. CAA Arcturus Radio Co. CBU Isolantite, Inc. CAB Baldwin, Nathaniel. CBV Fast Co. , John E. CAC Century Telephone Manufacturing Co. CBW Duovac Radio Tube Corporation. CAD Aresto Manufacturing Co. C BX Bodine Electric Co. CAE Cutler Hammer, Inc. CBY Aircraft Radio Corporation. CAF John Firth. CBZ Allen Bradley Co. CAG General Radio Co. CC Continental Electric Co. CAH Cutter Electric & Manufacturing Co. CCA Condenser Corporation of America. CAl Alladin Radio Industry, Inc. CCB Charles Bond Co. CAJ Holtzer-Cabot Co. CCC Continental Carbon Co. CAK American Braiding Co. CCD Selchell Carlson Corporation. CAL Locke Insulator Co. CCE Couch Electric Co. CAM Manhattan Electrical Supply Co. CCF American Blower Corporation. CAN Sangamo Electric Co. CCG Grimes Manufacturing Co. CAO Ward Leonard Co. CCH Crouse Hinds. CAP Photolex Corporation. CCI Communications Co., Inc. CAQ Robbins & Meyers Co. CCJ Henry L. Crowley Co. CAR Roller Smith Co. CCK H. C. Cook Co. CAS American Lava Corporation. CCL Century Electric Co. CAT American Transformer Co. CCM Fenwal, Inc. CAU Automatic Electric Co. CCN Connecticut Telephone & Electric Co. CAY Industrial Controller Co. CCO Carborundum Co. CAW Aerovox Wireless Corporation. CCP Ingersoll-Rand Co. CAX Aerial Machine & Tool Corporation. CCQ Allied Control Co. CAY Westinghouse Electric & Manufacturing Co. CCR Chisholm Ryder Co. CAZ Brooklyn Metal Stamping Co. CCS Soundscriber Corporation. CB Crocker-Wheeler Co. �CT Stromberg-Carlson Co. CBA Splitdorf Electric Co. CCU Continental Can Co. CBB Exhibit Supply Co. CCV Acme Electric Co. CBC Benjamin Electric Co. CCW Atlas Aircraft Products Corporation. CBD Brush Development Co. CCX R. W. Cramer, Inc. CBE Benjamin Electric Manufacturing Co. CCY Cinaudagraph Speakers Inc. CBF Burke Electric Co. CCZ Hart Manufacturing Co. CBG Briggs & Stratton Corporation. CD Cornell-Dubilier Corporation. CBH Boston Gear Works. CDA Diehl Manufacturing Co. CBI Corning Glass Works. CDB Bud Radio Inc. CBJ Ohio Brass Co. . CDC Dictograph Products Co. CBK Cardwell, Allen D . Manufacturing Co. CDD Allis-Chalmers. CBL Pacent Electrical Co. CDE Air-Tract Manufacturing Corporation. CBM Submarine Signal Co. CDF Cancelled, see CID. CBN Central Radio Laboratory. CDG Dane Electronics Laboratory. CBO Lapp Insulator Co. CDH H. Dietz Co. CBP Electrical Specialty Co. CDI David Bogen, Inc. CBQ Gold Seal Manufacturing Co. CDJ Dejur-Amsco Corporation. CBR Burgess Battery Co. CDK Eastman Kodak Co. CBS Bright Star Battery Co. CDL Belmont Radio Corporation.

CONFIDENTIAL 5

TupeNo. prejiZ

C DM C DN CDO CDP CDQ CDR CDS CDT CDU CDV CDW CDX C DY CDZ CE CEA CEB CEC CED CEE CEF CEG CEH CEI CEJ CEK CEL CEM CEN CEO CEP CEQ CER CES CET CEU CEV CEW CEX CEY CEZ CF CFA CFB CFC CFD CFE CFF CFG CFH CFI CFJ CFK CFL CFM CFN CFO CFP CFQ

6

CONTRAC TOR'S DESIGNATING LETTERS

Contractor

Mossman, D. P., Co. Daven Co. Onan & Sons, D. W. General Ceramics Co. A. F. Dormeyer Manufacturing Co. General Electronics, Inc. Electric Auto Light Co. Detrola Corporation. Allen B. Dumont Laboratory, Inc. Communications Development Corporation. Duplex Truck Co. Rogers Diesel & Aircraft Corporation. United Scientific Laboratories, Inc. Electronic Enterprises, Inc. CECO. Eclipse Aviation Corporation. Eby, Hugh H. Electric Controller Co. Cannon Electric Development Co. Thomas A. Edison, Inc. Egli Co., Inc. Electric Glass Co., Inc. Acme Electric Heating Co. Electrad, Inc. (Obsolete, see C MA). Johnson, E. F. Eicor, Inc. Electrons, Inc. Cornel Electric Manufacturing Co. Central Radio Corporation. Electrical Windings Co. Amperex Electronic Products Co. Continental Electric Co. Erie Resistor Corporation. Exide Electric Storage Battery Co. Strong Electric Corporation. Electrical Utilities Co. Esterline-Angus Co. Cleverly Electrical Works, Inc. Emerson Radio & Phonograph Corporation. Comar Electric Co. Electronic Mechanics, Inc. Deforest Radio Co. Bussman Manufacturing Co. Ray-O-Vac Co. Ferris Instrument Co. Federal Manufacturing & Engineering Co. Fada Radio & Electric Co., Inc. Freed Radio Corporation. Fisher Price & Co. Radio Research Laboratory. Ford Instrument Co. Fairchild Aviation Corporation. A. W. Franklin Manufacturing Co. Link, Fred M. FroiIand Manufacturing Co. Farnsworth Television & Radio Corporation. American Brake Shoe & Foundry McIntyre Connector Co. Florida Aircraft Radio Corporation.

TupeNo. prejiZ

CFR CFS CFT CFU CFV CFW CFX CFY CFZ C G CGA CGB CGC CGD CGE CGF CGG CGH CGI C GJ CGK CGL

CGM CGN CGO CGP CGQ CGR CGS CGT CGU CGV CGW CGX CGY CGZ CH CHA CHB CHC CHD CHE CHF CHG CHH CHI CHJ CHK CHL CHM CHN CHO CHP CHQ CHR CHS CHT CHU

Contractor

Ferranti Electric, Inc. Federal Anti-Capacity Switch Co. Federal Telephone & Radio Corporation. Tillotson Furniture Co. Foxboro Co. Sickles, F. W., Co. Freed Transformer Co. Perfection Plastics Products. S. W. Farber, Inc. General Electric Co. Goodyear Aircraft Corporation. Biddle Co., Ja.mes G. General Control Co. General Dry Batteries, Inc. Guardian Electric Manufacturing Co. Gudeman Co. Galvin Manufacturing Corporation. Girard Hopkins Co. Gilfillan Bros. Gisholt Machine Co. General Lead Batteries Co. Guild Manufacturing Co. (Tool & Die Divi-

sion). General Motors (Delco-Remy). General Tire & Rubber Co. Geophysical Service, Inc. Philharmonic Radio Corporation. Garod Radio Corporation. Goodrich Tire & Rubber Co. Gray Radio Co. Trumbull Electric Manufacturing Co. Bogue Electric Co. Gray Manufacturing Co. Globe-Wernecke Co. G-M Laboratory, Inc. Grant Storage Battery Co. General Communications Co. Signal Engineering & Manufacturing Co. Harley Davidson Motor Co. H-B Instrument Co. Hammarlund Manufacturing Co. Hardwick-Hindle, Inc. Henchelle, Chas. J. & Co., Inc. Howard Manufacturing Co. Halstead Traffic Communication. Arrow-Hart & Hegemad Electric Co. Higgins Industries. Henry Manufacturing Co. Hicock Electric Instrument Co. Hallicrafter Co. Horton Manufacturing Co. Heinemann Circuit Breaker Co. H. O. Boehme, Inc. Hayden Manufacturing Co. Hobart Bros. Herback & Rademan, Inc. Hygrade Sylvania Corporation. Hertner Electric Co. Harvey Hubbell, Inc.

CONFIDENTIAL

CONTRACTOR'S DESIGNATING LETTERS

Tl/pe No. prefi,J:

CHV CHW CHX CHY CHZ CI CIA CIB CIC CID CIE CIF CIG CnI

CIJ CIK CIL

CIM CIN CIP CIQ CIR CIS CIT

CIU CIV CIW CIX CIY CIZ CJ CJA CJB CJC CJD CJE CJF CJG CJH CJ! CJJ CJK CJL CJM CJN CJO CJP CJQ CJR CJS CJT CJV CJW CJX CJY CJZ CKA

Contractor

Hedstrom Union Co. Howard Radio Co. Hopes Windows, Inc. Hytron Corporation Hazeltine Electronics Corporation. Connectors, Inc. Airplane & Marine Instruments. Brumberger, Inc. Collins Instrument Co. Doolittle Radio, Inc. Industrial Condenser Corporation. Industrial Instruments, Inc. The General Industries Co. Hamilton Radio Corporation. Barlow Engineering Co. Edwards & Co., Inc. Ex (National Telephone & Radio Manufac-

turing Corporation). Eitel-McCollough Co. Indian Motorcycle Co. Int.ernational Projector Co. The Cundy-Bettoney Co., Inc. International Resistor Corporation. Supreme Instrument Corporation. International Telephone & Telegraph Corpo-

ration. Mendelsohn Speed Gun Co. Indiana Steel Products Co. Wayne Iron Works. Remington Rand. Rauland Corporation. Industrial & Commercial Electronics. New Haven Clock Co. Millen Co., James. Bunnel, J. H . Jones, Howard B . J. F. D . Manufacturing Co. Jefferson Electric Co. Friez, J. P. Stanley Chair Co. . Snyder, H. P. , Co .• Inc. J. A. Maurer, Inc. Sound Equipment Corporation of California. Brittain Sound Equipment Co. Dallons Laboratories. Janette Manufacturing Co. North Electric & Manufacturing Co. John Oster Manufacturing Co. J. P. Seeburg. Bliley Manufacturing Corporation. Jonsonburg Radio Corporation. Jenson Radio Manufacturing Co. Trojan Rectifier & Equipment Co. Scientific Industries. American Jewels Corporation. Sears & Roebuck. Leach Bros. , Inc. Radio City Products Co. Acme Wire Co.

CONFIDENTIAL

Tl/pe No. prefi,J:

CKB CKC CKD CKE CKF CKG CKH CKI CKJ CKK CKL CKM CKN CKO CKP CKQ CKR CKS CKT CKU CKV CKW CKX CKY CKZ CLA CLB CLC CLD CLE CLF CLG CLH CLI CLJ CLK CLL CLM CLN CLO CLP CLQ CLR CLS CLT CLU

CLV CLW CLX CLY CLZ C M CMA CMB CMC CMD CME CMF

Contractor

Hoffman Radio Corporation. Kohler Co. Airplane & Mariner Direction Finder Co. Espey Manufacturing Co. Kearfott EngineEh-fug Co. Kellogg Switchboard & Supply Co. Heintz & Kaufman.

.

Chicago Apparatus Co. Karp Metal Products Co., Inc. Templeton Radio Co. Lennox Manufacturing Co. August E. Miller Laboratories. Marathon Battery Co. Kato Engineering Co. Air King Products Co. Kirsch Co. Kenrad Tube & Lamp Corporation. Koenig & Schoner, Inc. Kenyon Transformer Co. Kurman Electrical Co. Aircraft Accessories. Walter Kidde & Co. , Inc. Blaw-Knox Co. Beaumont Electric Supply. Standard Piezo Co. Allis, Louis. Clough Brengle Co. Lauson Co. Dura Electric Lamp Co. , Inc. Lenz Electric Manufacturing Co. Littelfuse Laboratories, Inc. Electronic Laboratories, Inc. Alto Manufacturing Co. Lectrohm, Inc. Langeyin Co., Inc. Electronic Industries. Leland Electric Co. Lynch Manufacturing Co., Inc. Leeds & Northrup. Louthan Manufacturing Co. Lewyt Metal Products Co. Liebel-Flarsheim Co. Leach Relay Co. L. S. Brach Co. Lundquist Tool & Manufacturing Co. Columbia University Airborne Instrument

Laboratory. Line Material Co. Leviton Manufacturing Co. Altec-Lansing Corporation. Lion Manufacturing Co. Seiberling Latex Products Co. Bendix Marine Division, Bendix Aviation. P. R. Mallory Co. Milwaukee Boiler Co. Clarostat Manufacturing Co. Midwest Radio Corporation. Radio Manufacturing Engineers, Inc. Electro-Motive Manufacturing Co.

7

TrIpe No. prejiz

C M G C M H C M I CMJ CMK CML C M M CMN CMO CMP C MQ C MR C MS C MT C M U C MV CMW C MX CMY C MZ eN CNA CNB CNC CND CNE CNF CNG CNH CNI CNJ CNK CNL CNM CNN CNO CNP CNQ CNR CNS CNT CNU CNV CNW CNX CNY CNZ COA COB COC COD COE COF COG COH COl COJ COK COL

8

CONTRACTOR'S DESIGNATING LETTERS

Contractor Cinch Manufacturing Co. American Radio Hardware Co. Molded Insulation Co. A. J. Miller Auto Cruiser Co. McElroy, Theodore R. Meissner Electric Manufacturing Co. Miller Coil Co. Michigan Truck &: Trailer Body Co. Miller Rubber Co. Master Electric Co. John E. McNamara &: Sons. Micamold Radio Corporation. Federal Stamping &: Engineering Corporation. McKiernan-Terry Corporation. Mi.cro-Switch Corporation. .

Memovox, Inc. Majestic Radio &: Television Corporation. Magnavox Co. Marion Electrical Instrument Co. Majestic Metal Specialties. National Electrical Machine Shops, Inc. National Co. Noma Electric Corporation. National Carbon Co. Andrea Radio Corporation. National Electrical &: Manufacturing Co. Carlisle &: Finch Co. National Automatic Ordnance Co. The Murray Co. Graton & Knight Co. National Automotive Fibres, Inc. Kingston Products Corporation. Northeast Electric Co. National Mineral Co. National Cash Register Co. Noblitt-Sparks Industries, Inc. National Porcelain Co. Bell &: Thorn, Inc. Northern Radio Co. Nash Engineering Co. Norwalk Transformer Corporation. National Union Radio Corporation. Lektra Laboratory Inc. Charles W. Wolf & Co. , Inc. Pneumatic Scale Co. North American Philips Co. , Inc. National Fabricated Products, Inc. Abbott Instrument, Inc. Barber-Colman Co. Oak Manufacturing Co. Daunt Manufacturing Co. Ohio Electric Manufacturing Co. Photoplating Co., The Gorham Manufacturing Co. Ohio Carbon Co. Cords Limited The Okonite Co. Consolidated Engineering Corporation. Co1lins Radio Co. , Inc.

TrIpe No. prejiz

COM CON COO COP COQ COR COS COT COU COY COW

COX COY COZ CP CPA CPB CPC CPD CPE CPF CPG CPH CPI CPJ CPK CPL CPM CPN CPO CPP CPQ CPR CPS CPT CPU CPV CPW CPX CPY CPZ CQA CQB CQC CQD CQE CQF CQG CQH CQI CQJ CQK CQL CQM CQN CQO CQP CQQ CQR

Contractor

Ohmite Manufacturing Co. Connecticut Electric Manufacturing Co. Boonton Metal Products Co. Standard Plastics Co. Automatic Signal Corporation. Ross Manufacturing Co. Simplex Wire &: Cable Co. Oxford Tartak Corporation. R. Cooper, Jr. Rarptone Manufacturing Corporation. Wilcox Gap Corporation. Continental Motors Corporation. Marathon Co. Sonotone Corporation. R. C. Powell. Palmer Co. Price Bros. , Inc. Potter Co. Communication Products Co. Premier Electric Manufacturing Co. Precision Apparatus Co. Pioneer Gen-E-Motor Co. American Phenilic Corporation. Polin Co. John L. Pragel Co. Presto Recording Corporation. Philadelphia Thermostat Co. Paper Manufacturers Co. Panoramic Radio Corporation. Pioneer Instrument Co. Porcelain Products Co. Speer Resistor Corporation. Philco Radio & Television Corporation. Sperling Products Co. Precision Thermostat & Instrument Co. Peerless Electrical Products. Pratt Industries, Inc. Philadelphia Insulated Wire Co. Paragon Electric Co. Packard Bell Co. Pressed Steel Tank Co. The Astatic Corporation. BIiley Electric Co. Admiral Corporation. Air Communications, Inc. Bell Sound System. Permoflux Corporation. Belden Manufacturing Co. R udson Supply Co.

Perma-Bilt Diesel Ritter Corporation. Harvey Radio Laboratory. Travler Karenola R & T Corporations. E. A. Laboratories. Elector-Marine Co. Slater Manufacturing Co., Inc. Homelite Corporation. Par-Metal Products Corporation. Daughetee Manufacturing Co. Russell Electric Co.

CONFIDENTIAL

CONTRACTOR'S DESIGNATING LETTERS.

Tupe No. preji.t

CQS CQT CQU CQV CQW CQX CQY CQZ CR CRA CRB CRC

CRD CRE CRF CRG CRH CRI CRJ CRK CRL CRM CRN CRO CRP CRQ CRR CRS CRT CRU CRY CRW CRX CRY CRZ CS CSA CSB CSC CSD CSE CSF CSG CSH CSI CSJ CSK CSL CSM CSN CSO CSP CSQ CSR CSS CST CSU CSV

Contractor

Schuttig & Co. Technical Laboratories. American Condenser Co. Ansley Radio Corporation. Sparks-Withington Co. Lexington Electric Products Co. , Inc. Sherron Metallic Corporation. Presto Electric Co. Wireless Specialty Apparatus Co. Utah Radio Products Co. Airadio, Inc. RCA Manufacturing Co. (Radiotronics Divi-

sion) . Racon Electric Co., Inc. Audio Research, Inc. Radiart Corporation. E. M. Sargent. A. E. Rittenhouse. Colonial Radio Corporation. Commercial Radio Equipment Co. Radio Condenser Co. Remler Co., Ltd. Radiomarine Corporation of America. Radio Navigation Instrument Co. Crosley Corporation. Raytheon Manufacturing & Products Co. Radio Communications Equipment Co. Bendix Radio Division of Bendix Aviation. Cable Radio Corporation. Champion Radio Tube Co. Ray Supply Co. RCA Victor Division of RCA. Royal Electric Manufacturing Co. Radex Corporation. C. P. Clare & Co. Consolidated Radio Products Co. Sperry Gyroscope Co. Stackpole Carbon Co. Sun Shipbuilding & Drydock Co. Sa.mpson Electric Co. Struthers Dunn, Inc. Signal Electric Manufacturing Co. Sprague Specialties Co. Stanley & Patterson . Sherma!!, H. B. Sigma Instruments, Inc. Stupakoff Ceramic & Manufacturing Co. Switlik Parachute & Equipment Co. Solar Manufacturing Co. Shallcross Manufacturing Co. Standard Transformer Co. States Co. Seymour Products Co. Spencer Thermostat Co. Russell & Stoll Co. F. M. Stevenson Co. Star Electric Co. Springfield Upholstering Co. Simpson Electric Co.

CONFIDENTIAL

Type No. preji.t

CSW CSX CSY CSZ CTA CTB CTC CTD CTE CTF CTG CTH CTI CTJ CTK CTL CTM CTN CTO CTP CTQ CTR CTS CTT CTU CTV CTW CTX CTY CTZ CU CUA CUB CUC CUD CUE CUF CUG CUH CUI CUJ CUK CUL CUM CUN CUO CUP CUQ CUR CUS

CUT CUU CUV CUW CUX CUY CUZ

Contractor

American Steel & Wire Co. Selector Manufacturing Corporation. Sola Electric Co. Square D Co. Ceramic Specialties Co. The Bristol Co. Chicago Telephone Supply Co. Tobe-Deutschmann Corpotation. TE:lephonics Corporation. Finch Telecommunications. General Transformer Corporation. Thordarson Electric & Manufacturing Co. Taylor Instrument Co. Electronic Corporation of America. Technical Device Corporation. Tung-Sol Lamp Works, Inc. Triad Manufacturing Co. Teleradio Engineering Corporation. Triplett Electric Instrument Co. Ribbon & Ticker Paper Co. The Turner Co. Chicago Transformer Co. Thomas Flexible Coupling Co. Teletype Corporation. Triumph Manufacturing Co. T. W . T. Co., Inc. Webster Co. Trimm, Inc. Taylor Tubes, Inc. Technical Appliance Corporation. Edison Storage Battery Co. UImer, A. J. Edward G. Budd Manufacturing Co. Union Switch Co. Audio Development Co. United Electronics Co. United-Carr Fastener Co. United Guitar Corporation. McGlynn-Hays Manufacturing Co. Builders Iron Foundry Co. Pappan Stove Co. Kane Manufacturing Co. University Laboratory. Mu Switch Corporation. United Engineering Co. Auto Ordnance Co. United Pressed Products. Akley Camera, Inc. Reeds Sound Laboratory. United States Electric Manufacturing Corpo-

ration. United Transformer Corporation. Leach Co. Dictaphone Corporation. United Wood Specialty Co. Western Felt Works. Lithaloy Corporation. United States Television Manufacturing Cor­

poration.

9

T,IpeNo. preji;e

CV CVA CVB CVC CVD CVE CVF CVG CVH CVI CVJ CVK CVL CVM CVN CVO CVP CVQ CVR CVS CVT CVU CVV CVW CVX CVY CVZ CW CWA CWB CWC CWD CWE CWF CWG CWH CWI CWJ CWK CWL CWM CWN CWO CWP CWQ CWR

CWS CWT CWU CWV CWW CWX CWY CWZ CYA CYB CYC CYD

10

CONTRAC TOR'S DESIGNA TING LETTERS

Contractor

Weston Electric Instrument Corporation. A viometer Corporation. B. & R. Spring Co. Chapman Valve Manufacturing Co. Willys Overland Motor Co. The Vendo Co. Viewtone Co. Electronic Tube Corporation. Vanderherchen Co. Vickers, Inc. Waters Conley Co. Virginia Plak Co. Electro-Voice Manufacturing Co. United States Motors Corporation. B. F. Sturtevant Co. Tock Manufacturing Co. Pathfinder Radio Corporation. Alleghany Ludlum Steel Corporation. Rockbestos Products Corporation. R. E. S. Swam. Victor Insulators, Inc. Union Piezo Co. Wiegand, Edwin, Jr. , Co. Widin Metal Goods Co. American Microphone Co. Schwarze Electric Co. Sanders Bros. Manufacturing Co. Western Electric Co. Ward Products Co. Willard Storage Battery Co. Wirt Co. Wincharger Corporation. Adams & Westlake. Warwick Manufacturing Corporation. Automatic Winding Co. Whitlock Coil Pipe Co. Washington Institute of Technology. Wind Turbine Co. Central Armature Works. Westinghouse Lamp Co. Wisconsin Motors Corporation. Winters & Crampton Corporation. Webster Chicago Corporation. Winship Co. Wells-Gardner & Co. Worthington Pump and Machinery Corpora-

tion. Stewart-Warner Corporation. Wallace & Tiernan Products, Inc. William Wurdack Electric Manufacturing Co. Harvey Wells Communications. W'itt-Will Co. Weksler Thermometer Corporation. William H. Whiting Co. Witte Engine Works. Alden Products Co. IUrnback Radio Co. Merit Coil Manufacturing Co. Bryant Electric Co.

T1/pe No. prejiz

CYE CYF CYG CYH CYI CYJ CYK CYL CYM

CYN CYO CYP CYQ CYR CYS CYT CYU CYV CYW CYX Cyy CYZ CZA CZB CZC CZD CZE

'CZF CZG CZH CZI CZJ CZK CZL CZM CZN CZO CZP CZQ CZR CZS CZT CZU CZV CZW CZX CZY CAAA CAAB CAAC CAAD CAAE CAAF CAAG CAAH CAAI CAAJ CAAK

Contractor

Engineering & Research Corporation. Froelich, S., Co., Inc. International Business Machines Corporation. Wholesale Radio Laboratories. Yawman Erbe Manufacturing Co. Radio Engineering Laboratories, Inc. Boonton Radio Corporation. Metal Weld, Inc. Yaxley Manufacturing Co. (ob,solete, 8e6

CMA) . Lewis Electronics. Samuel M. Pistorio. Powercraft Corporation. Buda Engine & Equipment Co. Research Enterprises Ltd. Sperti Inc. Yale & Towne Manufacturing Co. Underwood Electric & Manufacturing Co. Press Wireless Inc. W. T. Wallace Manufacturing Co. Climax Engineering Co. Silman Manufacturing Corporation. Sanborn Co. Alliance Manufacturing Co. Breeze Corporation. E. H. Scott Radio Laboratories, Inc. David White Co. Electrical Research Laboratories, Inc. Frequency Measuring Service. Gephart Manufacturing Co. Humble Oil & Refining Co. Hipwell Manufacturing Co. , Inc. Z & Z Manufacturing Co. J. Kreiser Corporation. Bendix Aviation Ltd. Soreng-Manegold Co. Monitor Piezo Products Co. Super Electric Products Corporation. PlaStimold Inc. Communications MeaBurements Laboratories. Zenith Radio Corporation. R. H. Sheppard Co. Caterpillar Tractor Co. Sonora Radio & Television Corporation. Schauer Machine Co.

•

Scientific Coil & Wire Co. Crystal Products Co. Allied Radio Corporation. Nedco Manufacturing Co. Thompson, Davis, Phipps Corporation. New York Transformer Co. Dalmo Victor Co. Warren Leather Goods Co. Willard Manufacturing Co.· Universal Microphone Co. , Ltd. Cancelled. (8ee CCV.) Capacitron Inc. Wilder Manufacturing Co. M. H. Rhodes Inc.

CONFIDENTIAL

CONTRACTOR'S DESIGNATING 'lETTERS

Tr/peNo. prejiJ; Contractor

Tr/pe No. preji:& Contractor

CAAL Webster Products Co. CACS Lyon & Healy. CAAM Chicago Streamlite Corporation. CACT Highway Trailer Co. CAAN G. C . Hunt & Sons. CACU Whiting-Davis Co. CAAO Commercial Crystal Co. CACV American Aircraft Co. CAAP Hammond Instrument Co. CACW American Time Products. CAAQ Belber Trunk & Bag Co. CACx Andrew B. Hendryx. CAAR Beals & Selkirk Trunk Co. CACY Stanwick Winding Co. CAAS H. C. Evans & Co. CACZ W. S. Wilson Corporation CAAT Mills Novelty Co. CADA Chicago A venue Chevrolet. CAAU Waldorf Kerns & Co. CADB D-X Crystal Co. CAAV Harrisburg Steel Corporation. CADC Electrical Products Corporation. CAAW W ork-in-Wood Inc. CADD Checker Cab Manufacturing Corporation. CAAX K. D. N oble. CADE Higgins Industries Corporation. CAAY Ohmer Register Co. CADF Standard Transformer Corporation. CAAZ Radionic Research Co. CADG Scientific Radio Products Co. CABA Fisher Autotop Co. , The. CADH Standard Coil Products Co. CABB Fords Products Inc. CADI James Knight Co. CABC Real Silk Hosiery Mill, Inc. CADJ Gentleman Products. CABD United Cinephone Corporation. CADK Kuthe Laboratories, Inc. CABE Photoswitch, Inc. CADL Electronic Industries. CABF Operadio Manufacturing Co. CADM Hollister Crystal Co. CABO Commet Model & Airplane Supply Co. CADN R-9 Crystal Co. Inc. , CABH Signal Electronic & Manufacturing Co. CADO Silver City Crystal Co. CABI William Busse & Son, Inc. CADP General Piezo Co. CABJ Lionel Corporation. CADQ Hatcher-Fisk Manufacturing Co. CABK Western Sound & Electric Laboratory Inc. CADR Sun Manufacturing Co. CABL Frank Rieber. CADS Metal Hydrides, Inc. CABM W. F. Schrafft & Sons Corporation. CADT Robert Brand & Son Co. CABN Lehigh Structural Steel Co. CADU Pacific Electronics Co. CABO Penn Boiler & Burner Manufacturing. CADY Stoddart Aircraft Radio Co. CABP York-Hoover Body Corporation. CADW Spanjer Bros. CABQ O'Keefe & Merritt Co. CAD X Deal Mill & Lumber Co. CABR · Benwood Linze Co. CADY Nikor Products Co. CABS Palmer Electric & Manufacturing Co. CADZ Haywood Chemical Co. CABT Ross-Frankel Co. , Inc. CAEA American Laundry & Machinery Co. CABU Superior Electric Co. CAEB Keystone Manufacturing Co. CABV Johnson Service Co. CAEC Bell & Howell & Co. CABW International Industries, Inc. CAED Amplifier Corporation of America. CABX Industrial Tool & Die Co. CAEE Watson Co. CABY Tuttle & Kift. CAEF Theodore Schwamb Co. CABZ Edison Appliance. CAEG Eastern Co. CACA Times Telephoto Equipment Inc. CAEH Electro-Technical Laboratories, Inc. CACB Airtronics Development Corporation. CAEI Texas Electronics Co. CACC Heller Magnograph Corporation CAEJ Leich Electric Co. CACD Dayton Wheel Co. CAEK Hanovia Chemical & Manufacturing Co. CACE Crystal Research Laboratories. CAEL Arthur C. Lynch. CACF General Crystal Co. CAEM Bronze-Craft Inc. CACG T. R. Hoffman. CAEN Fractional Motors Co. CACH L. C . Smith & Corona Typewriter,Jnc. CAEO Midco Manufacturing & Distributing Co. CACI Keystone Piezo. CAEP Standard Arts Co. CACJ Franklin Transformer CO. CAEQ Grenby Manufacturing Co. CACK Karr Engineering Co. CAER Hunt Bros. & Rasin, Inc. CACL Wenksterm Halsey Co. CAES J. H. Keeney & Co. , Inc. CACM Quartz Laboratory. CAET De Vry Corporation. CACN Wynne Precision Co. CAEU American Crossarm & Conduit Co. CACO Leuck Electric Co. CAEV Research Construction Co. CACP Pacific Radio Crystal Co CAEW Fidelity Machine CO. CACQ Telex Products Co. CAEX Miller Manufacturing Co. CACR Mark Simpson Manufacturers. CAEY Sparks Manufacturing CO.

CONFIDENTIAL 11

TvpeNo. prefi,z

CAEZ CAFA CAFB CAFC CAFD CAFE CAFF CAFG CAFH CAFI CAFJ CAFK CAFL CAFM CAFN CAFO CAFP CAFQ CAFR CAFS CAFT CAFU CAFV CAFW CAFX CAFY CAFZ CAGA CAGB CAGC CAGD CAGE CAGF CAGG CAGH CAGJ CAGK CAGL CAGM CAGN CAGO CAGP CAGQ CAGR CAGS CAGT CAGU CAGV CAGW CAGX CAGY CAGZ CAHA CAHB CARC CARD CARE CAHF CAHG

12

CON TRACTOR'S DESIGNA TING LETTERS

Contractor

International Mutoscope. RBM Manufacturing Co. Federa.l Electric Products Co. Fay & Scott Co. Barbour Stockwell Co. Fellows Gear Shaper Co. Redmond Electric Co. Hudson American Corporation. Technical Radio Co.

Shure Bros. Sta.ndard Rolling Mills Inc. Duro Test Corporation. Jacobson Manufacturing Co. Richardson-Allen Corporation. Payne Furnace & Supply Co. Lewis Supply Co. Carson Machine & Supply. Radio Receptor Inc. Harper Co., The. Stanley Engineering Co. Thermador Electric Manufacturing Co. Black Industries, Mec-Rad Division. Henry H. Sheit. Walworth Co. Oshkosh Trunk & Luggage Co. Lambert Meter Co. Baldor Electric Co. Allen E. Chrisholm. Broadway Electric Co. Sal-Mar Laboratories, Inc. Machlett Laboratories, Inc. American Television Laboratories. Merritt Mounting & Finish Corporation. Simon Co. '

Rigid Board Products Co. G. Felsenthal & Sons. Ampherite Co. John R. Hollingsworth Co. Radio Controls Inc. Atlas Metal Stamping Co. W. C. Fleck & Brothers, Inc. Smith Welding Equipment Corporation. Ray Jefferson, Inc. Dewey Almy. Molded Matex. Rorni Signal Corporation. Measurements Corporation. Nichols Products Co. Camfield Manufacturing Co. Waterman Products Co. Walter L. Schott Co. Greenway Reflector Co. Sound Products Co. Churchill Cabinet Co. Barker & Williamson. Warner Products. Translite, Inc. Cancelled. (See CDR.) Chathan Electronics.

TvpeNo. prefi,z

CARR CAHI CAHJ CAHK CAHL CAHM CARN CAHO CAHP CAHQ CAHR CAHS CAHT CAHU CAHV CAHW CAHX CAHY CAHZ CAl A CAIB CAlC CAID CAIE CAlF, CAIG CAIH CAlI CAIJ CAlK CAlL CAlM CAIO CAIP CAIQ CAIR CAIS CAIT CAIU CAIV CAIW CAlX CAIY CAIZ CAJA CAJB CAJC CAJD CAJE CAJF CAJG CAJR CAJI CAJJ CAJK CAJL CAJM CAJO CAJP

Contractor

N ew York Drop Cloth Manufacturing Co. Ajax Leather Manufacturing Co. Eagle Electric Manufacturing Co. C. Bruno & Sons, Inc. General Television & Radio Corporation. Quam-Nickolas Co. Radio Speaker, Inc. Thomas M. Marshal. Dillon Beck Manufacturing Co. Associated Metal Products Co. J. & B. Manufacturing Co. C. L. Gougler Machine Co. Couse Laboratories. Trailer Co. of America. Clark Supply Co. Crowe Nameplate Co. Marine Radio Co. Cambridge Instrument Co. Rex Bassett, Inc. William Meyers Co. Electrical Indicator Co. Mitchell Camera Corporation. Chrysler Corporation. Bruno-New York, Inc. Simmons Bros., Inc. Condenser Products Co. Brenkert Light Projection Co Allied Housing Associates Inc. Pan-Electronics Laboratories, Inc. Robinson Aviation, Inc. Colonial Brass Co. American Steel Package Co. Adler Manufacturing Co. Royal Maid Manufacturing Co. Rumsey Electric Co. Electrical Reproduction Co. Birtcher Corporation, The. Sillcocks Miller Co. Power Equipment Co. Roos, Ed., Co., of Forest Park. Voltz Bros. Inc. Kerby Saunders Manufacturing Co. American Bowling & Billiard Co. Marathon Electric Manufacturing Co. Browning Laboratories. Eastern Amplifier Co. Newton Corporation. Wurlitzer, Rudolph, Co. Hylite Corporation. Victor J. Andrew Co. International Diesel Elec. York Ice Machinery Corporation. McGrade Manufacturing Co. Garner Electronics Corporation. Crown Venetian Blinds Co. Bigelow-Sanford Carpet Co. Webster Electric Co.

Electro-Lux Corporation. Morgan Construction Co.

CONFIDENTIAL

CON TRAC TOR'S DESIGNATING LETTERS

7'!Ipe No. preji.&

CAJQ CAJR CAJS CAJT CAJU CAJV CAJW CAJX CAJY CAJZ CAKA CAKB CAKC CAKD CAKE CAKF CAKG CAKH CAKI CAKJ CAKK CAKL CAKM CAKN CAKO CAKP CAKQ CAKR CAKS CAKT CAKU CAKV CAKW CAKX CAKY CAKZ CALA

CALB CALC CALD CALE CALF CALG CALH CALI CALJ CALK CALM CALN CALO CALP CALQ CALR CALS CALT CALU CALV CALW

C01ItTactor

Amco Products Co. Lavoie Laboratories. Palmer-Bee Co. Waldvogel Bros. Co. John E. Lingo & Son Inc. Columbia Electric Manufacturing & Co. Groves Corporation. A. P. Foster Co. Davison Chemical Corporation. Electronic Specialty Co. Ruby Electric Co. Dielectric Products Corporation. Crescent Industries, Inc. Muter Co. Quad Manufacturing Co. Waukesha Motor Co. Safety Car Heating & Lighting Co. Camera Equipment Co. Commercial Radio Sound Corporation. General Electronics Industry. General Instrument Corporation .

. Fruehauf Trailer Co. S. Dresner & Son, Inc. Bunting Glider. Apex Electric Co. George Evans Corporation. Warner & Swasey Co. Ashtabula Auto Equipment. Heyer Products Co. National Cine Laboratory. Winslow Co. Hill Diesel Engine Co. Virginia Lincoln Co. Columbia Machine Works, Inc . Wheeler Insulated Wire Co. Diamond Instrument Co. Communication Equipment & Engineering

Co. Electric Motors & Specialty Co. John J. Nesbitt. Vandercook & Sons. Neumode Products Corporation. Durham, Inc. Columbia Broadcasting System. Engineering Laboratories, Inc. Bantam Products Co. Archwin Co. Bowen & Co. Cole Steel Co. Reiner Electronics Co. Bond Equipment Co. Pitney-Bowes Postage Meter Co. Aircraft Specialty Products Co. Zenith Associates Co. Hercules Electrical Co. Industrial Transformer Corporation . Chicago Industrial Instrument Co. Plymouth Wood Products. Electromatic Distributor, Inc.

CONFIDENTIAL

7'!Ipe No. preji.&

CALX CALY CALZ CAMA CAMB CAMC CAMD CAME CAMF CAMG CAMH CAMI CAMJ CAMK CAML CAMM CAMN CAMO CAMQ CAMR CAMT CAMU CAMV CAMW CAMX CAMY CAMZ CANA CANB CANC CAND CANE CANF CANG CANH CANJ CANK CANL CAN M CANN CANO CANP CANQ CANR CANS CANT CANU CANV CANW CANX CANY CANZ CAOA CAOB CAOC CAOD CAOE CAOF CAOG

Contractor

Tyer Rubber Co. Klumpp Manufacturing Co. Bryant Checking Grinder Co. Charles J. Bodnar, Inc. Carlisle Crystal Co. Crystal Laboratory. Good-All Electric Manufacturing Co. Monowatt Electric Corporation. National Scientific Products Co. Peterson Radio Co. Precise Development Co. Radell Crystal Co. Radio Specialty Manufacturing Co. Sipp-Eastwood Corporation. Somerset Laboratory, Inc. TeUcon Corporation. Trulite Research Laboratories, Inc. Wonderlite Co. Cambridge Thermionic Corporation. American Lady Corset Co. Universal Television System. Valpey Crystal Corporation. Lavelle Aircraft Corporation. Commercial Equipment Co. Federal Engineering Co. Flight Training Research Association. Rola Co. , Inc. I . T. E. Circuit Breaker Co. Aviola Radio Corporation. Otis Elevator Co. "V" Precision Instrument Manufacturing. Self Winding Clock Co. G. Orangescreen. Anchor Manufacturing Co. Precision Development Co. Electric Products Co. Aircomp Ltd. G. Kalart. Warren-McArthur Corporation. Demornay Budd Inc. Ostby & Barton Co. Automatic Washer Co. Electronic Development Laborat,ory. Harry Meyers & Co. Kings Electronics, Inc. General Textile Mills, Inc. Seaboard Electric Co. O. B. McClintock. Liberty Tool Gage Works, Inc. Taft-Pierce Manufacturing Co. Lear, Inc. A. L. Smith Iron Co. Marcus Mason Co., Inc. Oneida, Limited. Berkey & Gay Furniture Co. New Products Corporation. W. F. Haynes. Brookfield Engineering Laboratories. Imperial Electric Co.

1 3

Type No. preji.c

CAOH CAOJ CAOK CAOL CAOM CAON CAOP CAOQ CAOR CAOS CAOT CAOU CAOV CAOW CAOX CAOY CAOZ CAPA CAPB CAPC CAPD CAPE CAPF CAPG CAPH CAPI CAPJ CAPK · CAPM CAPN CAPO CAPP CAPQ CAPR CAPT CAPU CAPV CAPW CAPX CAPY CAPZ CAQB CAQC CAQD CAQE CAQF CAQG CAQH CAQI CAQJ CAQK CAQL CAQ M CAQN CAQO CAQP CAQQ CAQR CAQS

14

CONTRACTOR'S DESIGNA TING LETTERS

Contractor

Airway Electric Appliance. Exel Foundry & Machine Co. Brunson Instrument Co. Carter Motor Co. Luce Manufacturing Co. Lancaster Electronic Laboratory. Royal Switchboard Co., Inc. Bernard Rice's Sons, Inc. Radio Frequency Laboratories. Wilcox Electric Co. Crompton & Knowles Loom Works. Wagner Electric Co. Air Associates, Inc. Transmitter Equipment Manufacturing Co. Automatic Electric Manufacturing Co. J. B . Waterfield. Brandt, Inc. N orden Laboratories. U. S. Instrument Co. Schnabel Co. , The Cole Electric Products Co. Boyle Manufacturing Division. Rees Blowpipe Co. Plymouth Machine & Burner Corporation. Telegraph Apparatus Co. Jefferson Travis Radio. W -J-L Products Co. Gregory Electric Co. Cover-Dual Signal System, Inc. Hughes Aircraft Co. Cole Instrument Co. Milliken Machine Co. Arpin Manufacturing Co. J. W. Greer. Powle Manufacturing Co. Amthor Testing Instrument Co. Marlboro Tool & Manufacturing

' Co.

Pringle Electrical Manufacturing Co. F. S. Electric Co. Dumont Electric Co. Foote Bros. Gear Machine Corporation. S. W. Inductor Co. Adapti Co. , The . Aero Unit Inc. Willmotte Labratories. Hamelco. Houston Corporation. American Electronics. Hewlett Packard Co. S. H. Couch. Essex Specialty Co. Lewis Engineering Co. Thomas B. Gibbs & Co. Friedman Co. Sheridan Electro Corporation ABT Manufacturing Corporation. Cline Electric Manufacturing Corporation. Thornton Fuller Co. Raybould Coupling Co.

TlIpe No. preji.c

CAQT CAQU CAQV CAQW CAQX CAQY CAQZ CARA CARB CARC CARD CARE CARF CARG CARH CARJ CARK CARL CARM CARN CARO CARP CARQ CARR CARS CARU CARY CARW CARX CARY CARZ CASA CASB RA RB RD RE

RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RW RX RY RZ

Contractor

Technical Apparatus. University of Iowa. Chickson Tool Co. R. L. Drake Co. Howard Pacific Manufacturing Co. Parker Appliance Co. Brelco Corporation. L. J. Wing Manufacturing Co. Eastern Air Devices, Inc. Stricher-Brunhuber. Johnson-Claflin Corporation. Potter & Brumfield Manufacturing Co. , Inc. Midwest Production Machine Co. Dayton Acme Co. Rowe Industries. Designers for Industry, Inc. Wyse Laboratories. Minneapolis-Honeywell Reg. Co. Islip Radio Manufacturing Corporation. Ernest Chandler Co. Industrial Products Co. United Machine Works. Union Electronics Corporation. Rome Cable Corporation. General Mills, Inc., Mechanical Division. F. A. Smith Manufacturing Co. Pass & Seymour, Inc. Statham Laboratories. Gardner Electric Manufacturing Co. American Bosch Corporation. Automatic Radio Manufacturing, Inc. J-B-T Instrument. Inc. Precision Radio Products Co. Naval Research Laboratory, Bellevue, D. C. Navy Yard, Boston, Mass. Naval Operating Base, Hampton Roads, Va. Electronics Division BuShips, Washington,

D. C. Naval Air Station, Pensacola, Fla. Naval Training Station, Great Lakes, Ill. Navy Yard, Charleston, S. C. Bureau of Aeronautics. Naval Operating Base, San Diego, Calif. Naval Station, Cavite, P. I . Navy Yard, Philadelphia, Pa. Navy Yard, Mare Island, Calif. Navy Yard, Norfolk, Va. Naval Operating Base, New Orleans, La. Navy Yard, Portsmouth, N. H. Underwater Sound Laboratory, Fort Trumbull Naval Aircraft Factory. Navy Yard, Puget Sound, Wash. Naval Station, Tutuila, Samoa. Naval Station, Guam, Guam. Navy Yard, Pearl Harbor, T. H. Navy Yard, Washington, D. C. Naval Academy, Annapolis, Md. Navy Yard, New York, N. Y. Naval Air Station, Anacostia, D. C.

CONFIDENTIAL