Manufacturer;EIA code
;
Admiral Corp;101
Aerovox Corp;102
Allen-Bradley;106
American Condensor;109
Amperex (USA);111
Bendix;125
Centralab;134
Chicago Condensor;135
CTS (Chicago Telephone Supply);137
Stancor (Chicago-Standard);138
Cinch;139
Clarostat;140
Coil Engineering;141
Crosley;152
DuMont;158
Eby;160
Eimac (Eitel-McCullough Inc);162
Aerovox Hi-Q Division;163
Electronic Tube Corp;169
Ensign Coil;172
Erie;173
Essex;175
John E Fast;178
Freed;183
Gates;187
General Electric;188
General Radio;194
Hallicrafters;199
Hammarlund;201
Hytron (CBS-Hytron);210
IRC (International Resistance Co);214
Jackson;216
Jefferson Electric;218
Jensen;220
E F Johnson;222
Kester;224
Lenz;228
Littelfuse;230
Machlett;231
Magnavox;232
Mallory;235
Thordarsen-Meissner;238
Merit Coil & Transformer;239
Micamold;240
James Millen;242
Muter;244
National Co;245
Arvin; 248
Ohmite;251
DuKane (Operadio);252
Packard Bell;254
Philco;260
Philmore;262
Pilot;264
Quam (Quam-Nichols);270
Radio Condensor Company;273
RCA; 274
Radio Craftsmen;275
Raytheon;280
Rola;285
J P Seeburg;289
Mark Simpson (MASCO);295
Solar;296
Speer;300
Sprague;303
Stackpole;304
Standard Coil;305
Superior Tube Co;310
Sylvania;312
Triplett;321
Tung-Sol;322
United Electronics;323
Utah;328
Wells-Gardner; 334
Western Electric;336
Westinghouse;337
Weston;338
Zenith Radio Corp;343
Astatic;345
Essex;352
New York Transformer;366
Altec Lansing-Peerless;391
Foster Transformer;394
General Cement;396
BIC; 409
General Transformer;412
United Transformer Corp (UTC);418
North American Philips (Norelco);423
Newcomb; 437
Gudeman;438
Collins;439
Cannon;440
Good-All;446
Empire Coil;452
Barker & Williamson;461
Oxford;465
Pyramid;472
Radio-Television Products Corp;489
Caledonia;503
Hickok;508
United Condensor;516
Triwec Transformer;524
Ward Leonard;532
Anaconda;547
Midwest Coil & Transformer;549
Standard Winding Co;550
ATR; 551
Amphenol;554
Waldom Electronics;555
Electrical Utilities Corp;569
F & V Coil Winding;572
Belden;579
Bogen;589
Shure Brothers;590
Woodward-Schumacher;606
Consolidated;607
Simpson Electric; 614
Illinois Capacitor (Condensor);616
Pickering (Stanton);631
Central Coil;637
American Radionic;648
Electro-Voice;649
Sangamo;658
Electrical Windings;682
Keystone Hardware;699
Ajax;705
Pioneer;706
Bell Amps;708
Standard Condensor;710
Taylor (aka Cetron-Taylor);713
Methode;720
Milwaukee Resistor;722
RMC (Radio Materials Corp);732
Alpha;733
Lewis & Kaufman;738
Russell Speaker Co;748
National Electronics (also Cetron);749
Grand Transformers;757
Quincy Speaker Mfr Corp;767
Penta Laboratories;771
Muntz;772
Forest Electric;773
Ogden Coil & Transformer;776
Vacuum Tube Products;781
Sonotone;787
McIntosh;793
Harmon-Kardon;794
Varian Associates;809
Dale;816
Triad;830
Better Coil & Transformer;831
Tetrad;842
Klipsch;843
International Rectifier;845
University;847
Drake; 851
Precision (Grommes); 871
Acro Products (Acrosound);878
Litton Industries;879
Mohawk;883
Condensor Manufacturers;885
Connector Corp;888
American Transformer;892
Tresco;897
Coilcraft;906
Aerocoil;908
Acme Coil & Transformer;928
Atlas;932
Magnetic Coil Mfring;933
Oaktron;934
Electrons Inc;935
Northlake; 1005
Pacific; 1052