firmname	sizetv	homerad	unkntype	yrsexp	entertv
A.R.F. Products Co.	B	0	0	2	0
Acme Merchandise Co., Inc.	X	0	0	1	0
Admiral Corp.	AAAA	0	1	2	1
Air Transport Equipment, Inc.	C	0	0	15	0
Air-King Products Co., Inc.	D	1	0	15	1
Airadio	X	1	0	6	0
Aircraft Accessories Corp., Electronic Division	X	0	0	5	0
Aircraft Radio Co., Inc.	AAAA	0	0	17	0
Airplane & Marine Instruments, Inc.	AAA	0	0	7	0
Airtronics Development Corp.	A	0	1	3	0
Algonquin Parts Inc.	A	0	0	1	0
Allied Radio Corp.	AA	0	1	5	0
American Aircraft Radio Division of Searle Aero Industries Inc., & Searle Aero In	A	1	0	6	0
American Communications Corp.	B	0	0	7	0
American Foundation for the Blind Inc.	X	0	1	12	0
Andes Trading Co., Inc.	X	0	1	0	0
Andrea Radio Corp.	AA	1	0	11	1
Ansley Radio Corp.	A	1	0	4	1
Anylite Electric Co.	C	0	0	22	0
Argus, Inc.	AAAA	0	0	5	0
Arnesson Electric Co.	A	0	0	11	0
Audar Inc.	X	0	1	0	1
Automatic Radio Mfg. Co., Inc.	A	1	0	22	1
Automatic Winding Co., in 1946 Automatic Manufacturing	X	0	0	3	0
Aviometer Corp.	A	0	0	1	0
Barker & Williamson	B	0	0	5	0
Bassett Rex Inc.	D	0	0	6	0
Bell Sound Systems, Inc.	B	0	1	4	0
Belmont Radio Corp.	AAAA	0	1	14	1
Bendix Aviation Ltd., & Bendix Aviation Corp. Pacific Division; Bendix Radio Corp	AAAA	1	0	10	1
Biltmore Radio Corp.	D	0	0	0	0
Bodnar, Charles J., Co. Inc.	X	0	0	8	0
Boes, W.W. Co., The	A	0	1	4	0
Bogen, David Co., Inc.	A	0	1	2	0
Bolsey Machines Corp.	A	0	0	1	0
Bowers Battery & Spark Plug Co.	AA	0	1	1	1
Breeze Corp., Inc.	AAAA	0	0	6	0
Brown Radio Corp.	X	0	1	3	0
Buckeye Electric Manufacturers	X	1	0	17	0
Cardwell, Allen D., Mfg. Corp.	AAA	0	0	24	0
Carron Manufacturing Co.	B	1	0	9	0
Carruthers & Fernandez	B	1	0	3	0
Carter Radio Division, Precision Parts Co.	AAAA	0	1	1	0
Chaber Corp.	X	0	1	0	0
Chambers, F.B. & Co.	F	0	1	23	0
Chatham Electronics	A	0	0	1	0
China Aircraft Co. & Universal Electronic Manufacturing Co.	A	1	0	1	0
Cincinnatti Electronics Inc.	X	0	1	0	0
Collins Radio Co.	AAAA	0	0	9	0
Colonial Radio Corp.	AAAA	1	0	22	1
Communications Co., Inc.	X	0	1	1	0
Concord Radio Corp., Dept. TR	AAAA	0	1	2	0
Continental Radio & Television Corp.	AAA	0	1	6	0
Coswell Mfg. Co.	X	1	0	0	0
Cover Dual Signal System Div. of Electra Voice Corp.	AAA	0	0	2	0
Crosley Corp.	AAAA	1	0	25	1
Crystal Products Co.	X	1	0	1	0
DX Radio Products Co., Inc.	X	0	1	1	0
Dalton-Cooper, Inc.	A	0	0	0	0
Dayton-Acme Co.	AAAA	0	0	1	0
De Wald Radio Mfg. Corp.	B	0	1	7	1
DeJulio Brothers Manufacturing Co.	D	0	1	1	0
Delco Radio Div. General Motors Corp.	AAAA	0	0	11	0
Dine, F.E. & Co. Inc.	X	0	0	0	0
Doolittle Radio Inc.( & Falknor 1940)	X	0	0	8	0
Drake, R.L. Co.	B	0	0	3	0
Dynavox Corp.	C	1	0	0	0
Eastern Electronics Corp.	X	1	0	1	0
Eckstein Radio & Television Co.	A	1	0	1	0
Electrical Industries Mfg. Co., Inc.	A	0	1	24	0
Electrical Reproduction Co.	C	0	0	1	0
Electrical Research Laboratories	AAAA	1	0	12	0
Electro-Voice Inc.	A	0	0	0	0
Electronic Associates Inc.	A	0	0	1	0
Electronic Creations Co.	E	0	1	0	0
Electronic Devices Co.	B	0	1	2	0
Electronic Laboratories Inc.	A	0	0	15	0
Electronic Radio Alarm Inc.	X	0	0	0	0
Electronic Research & Manufacturing Corp.	D	0	1	2	0
Electronics Development Co.	C	1	0	6	0
Electronics Specialty Co.	B	0	0	4	0
Emerson Radio & Phonograph Corp.	AAAA	1	0	22	1
Ensign Coil Co.	A	0	0	1	0
Erco Radio Laboratories, Inc.	X	0	0	5	0
Espey Mfg. Co.	AAA	1	0	13	0
Fada Radio & Electric Co.	A	1	0	15	1
Farnsworth Television & Radio Corp./Capehart Corp. 1940	AAAA	1	0	17	1
Federal Mfg. & Engineering Corp.	AAA	0	0	3	0
Federal Telephone & Radio Corp.	AAAA	1	0	3	0
Ferguson Radio, Inc.	E	0	1	8	0
Fisher Research Laboratory	B	0	0	6	0
Flush or Finish Wall Radio Co.	X	0	0	0	0
Frank Export Import Co., Inc.	A	1	0	0	0
Freed Radio Corp.	X	1	0	4	1
Galvin Mfg. Corp. [Motorola]	AAA	1	0	11	1
Garod Radio Corp.	X	1	0	5	1
Gates American Corp.; Gates Radio & Supply Co.	A	0	0	9	0
General Communicating Co.	C	0	0	1	0
General Electric Co. Appliance & Merchandise Dept.; General Electric Co.	AAAA	1	0	21	1
General Television & Radio Corp.	D	1	0	14	0
General Television & Radio Corp.	AAAA	1	0	1	0
Gilfillan Bros. Inc.	A	0	1	22	1
Graybar Electric Co. Inc.	AAAA	0	0	20	0
Greene, G.G. Manufacturing Corp.	AAAA	0	1	2	0
Greenfield, Frank L. Co.	X	0	0	0	0
Gulbransen Co.	B	1	0	17	0
H. & A. Instrument Co.	X	1	0	1	0
Hallicrafters Co.	AAAA	0	0	7	1
Hamilton Radio Corp.	AAA	0	0	5	0
Hammarlund Mfg. Co., Inc.	AAAA	1	0	24	0
Harrison Radio Corp.	A	0	0	2	0
Hart, Frederick & Co., Recordgraph Division	X	0	0	3	0
Harvey Machine Co. Inc.	AAAA	0	0	4	0
Harvey Radio Laboratories Inc.	AAA	0	0	8	0
Harvey-Wells Communications Inc.	A	0	0	7	0
Hastings Instrument Co., Inc.	X	0	0	0	0
Hearing Aid Laboratories	B	0	0	3	0
Heath Co.	A	0	0	6	1
Herbach & Raideman Co.	B	0	0	4	0
Higgins Inc. in 1947, Higgins Industries Inc., Radio Div. In 1946	AAAA	0	0	2	0
Hoffmann Radio Corp./Mission Bell Radio Mfg. Co., Inc.	AAAA	1	0	8	1
Hofman, C.L. Corp.	AAA	0	1	1	0
Hotel Radio Corp.	AA	0	0	0	0
Howard Radio Co.	AAA	1	0	22	1
Hudson American Corp.	AAAA	0	0	1	0
Industrial Electronic Corp.	AAA	1	0	2	0
Industrial Tool & Die Works Inc.	AAA	0	1	3	0
Insuline Corp. of America	AAAA	0	1	19	0
International Telephone & Manufacturing Co.	AAAA	0	0	5	0
Islip Radio Manufacturing Corp.	A	0	0	4	0
Jackson Radio & Television Co.	X	0	1	14	1
Jefferson-Travis Radio Mfg. Corp.	B	0	0	7	0
Johnson, E.F. Co.	AAA	0	0	15	0
Karr or Kaar Engineering Co.	A	0	0	6	0
Kingston Products Corp.	AAAA	1	0	6	0
Kumfy Products Inc.	B	1	0	6	0
La Magna Manufacturing Co.	X	0	1	1	0
Lavoie Laboratories	AA	0	0	2	0
Leander Electronics Corp.	X	1	0	0	0
Lear Avis, Inc.; Lear, Inc.	AAAA	0	0	7	0
Lear Inc.	AAAA	0	0	1	0
Lewyt Corp.	AAA	0	0	3	0
Lindex Corp.	A	0	1	0	0
Lister Electronic Products Co.	D	0	1	3	0
Long, L.J. Co. Inc.	D	1	0	0	0
Lorain County Radio Corp.	A	0	0	4	0
Maddison Electrical Products Corp.	A	0	0	3	0
Magnavox Co., The	AAAA	0	1	5	1
Majestic Radio & Television Corp.	AAAA	1	0	8	1
Mason Radio Products Inc.	A	1	0	1	0
Mastercrafters Mfg. Co.	X	0	0	7	0
McElroy, T.R.	A	0	0	8	0
McMurdo or McMuirin Silver Co.	X	0	1	0	0
Meck, John Industries	AAA	0	1	3	1
Meissner Mfg. Co. div. Of Maguire; Maguire Industries Inc., Electronics Div.	AAAA	1	0	6	1
Midwest Radio Corp.	A	1	0	25	1
Millen, James, Mfg. Co. Inc.	AAA	0	0	8	0
Minerva Corp. of America	X	1	0	0	0
Modern Electronic Co.	X	1	0	2	0
Modernair Corp.	X	1	0	0	0
Molded Insulation Co., Inc.	AAA	0	1	1	0
Monitor Products Co.	X	1	0	0	0
Multi-products Tool Co.	A	0	0	5	0
National Co., Inc.	AAAA	0	0	22	1
National Union Radio Corp.	AAAA	0	1	1	0
Noblitt-Sparks Industries Inc.	AAAA	1	0	13	1
Northeastern Engineering Co.	X	0	1	0	0
Northern Radio Co.	X	0	0	2	0
Northern Radio Co.	X	0	0	0	0
Olympic Radio & Television Inc.	AAA	0	1	0	1
Operadio Mfg. Co.	AAAA	0	0	22	0
Oxford Tartak Radio Corp.; Oxford Radio Corp.	A	0	0	5	0
Pacific Electronics	A	1	0	3	0
Packard Mfg. Corp.	AAAA	0	1	4	0
Packard-Bell Co.	AAAA	1	0	8	1
Payne Radio Television	X	0	0	0	0
Philco Corp.	AAAA	1	0	16	1
Philharmonic Radio Corp.	X	1	0	3	1
Philmore Mfg. Co.	A	1	0	21	1
Phoenix Electronics, Inc.	B	0	1	0	0
Pierson-De Lane, Inc.	X	0	0	7	0
Pilot Radio Corp.	X	1	0	14	1
Pioneer Electric & Research Corp.	X	1	0	1	0
Polarad Electronics Co.	X	0	1	1	0
Precision Specialties	A	1	0	1	0
Premier Crystal Laboratories Inc.	AAAA	0	1	11	0
Press Wireless, Inc.	AAAA	1	0	4	0
RCA Victor Div./Radio Corp. of America (1930/31 & earlier)	AAAA	1	0	25	1
Racon Electric Co. in 1946, Raycon Electric Co. in 1945	C	0	0	4	0
Radiaphone Corp.	A	1	0	1	0
Radiation Products Inc.	X	0	0	3	0
Radio Circular Co.	C	0	1	20	0
Radio Controls, Inc.	X	0	0	3	0
Radio Craftsman or Craftsmen	C	1	0	2	0
Radio Development & Research Corp.	X	0	0	5	0
Radio Engineering Laboratories Inc.	X	0	0	18	0
Radio Frequency Laboratories Inc.	A	0	0	8	0
Radio Manufacturing Engineers Inc.	A	0	0	7	0
Radio Marine Corp. of America, Radiomarine Corp. of America in 1946	AAAA	0	0	6	0
Radio Navigational Instrument Corp. [Espey at same address!]	X	0	0	6	0
Radio Receptor Co. Inc.	A	0	0	25	0
Radio Specialities Co.	A	0	1	4	0
Radio Testing Station	D	0	0	25	0
Radlotel or Radiotel Service Co.	X	0	0	0	0
Ray Jefferson, Inc.	B	1	0	4	0
Raytheon Mfg. Co. Broadcast Equipment Division	AAAA	0	0	1	
Regal Electronics Corp.	X	0	1	2	1
Remler Co., Ltd.	AA	1	0	17	0
Rodolite Mfg. Co.	B	0	1	3	0
Rowe Radio Research Laboratory	X	1	0	6	0
Sanborn Co.	A	0	0	4	0
Schuttig & Co.	A	0	0	2	0
Schwien, L.N. Engineering Co.	X	0	0	3	0
Scott, E.H. Radio Laboratories Inc.	X	1	0	13	1
Selectar Manufacturing Corp.	A	1	0	2	0
Sentinel Radio Corp.	AAAA	1	0	5	1
Servair Inc. in 1947, Aircraft Instrument Service, Inc. in 1946-46	B	0	0	5	0
Setchell-Carlson Inc.	AA	1	0	8	1
Sheridan Electro Corp.	A	0	1	3	0
Sherold Specialty Products	X	0	1	0	0
Shyvers & Shyvers	A	0	0	5	0
Siebenthaler Div. Aircraft Accessories Corp.	A	0	0	6	0
Signal Electronics Inc.	X	1	0	2	0
Simplex Radio Corp.	AAA	1	0	11	0
Sound Amplification Co.	X	0	0	9	0
Sound Equipment Corp. of California	AA	0	0	4	0
Sparks-Withington Co.	AAAA	0	0	21	1
St. Louis Radio Engineering Co.	X	0	0	17	0
Stewart-Warner Corp.	AAAA	1	0	22	1
Stromburg-Carlson Co.	AAAA	1	0	25	1
Stuart or Stewart Machine & Tool Co.	A	1	0	2	0
Sun-Glow Industries, Inc.	AAA	0	1	16	0
Sundt Engineering Co.	A	0	0	9	0
Symphonic Radio & Electronics Corp.	B	0	1	0	1
Taybern Equipment Co., Inc.	A	1	0	3	0
Technical Radio Co.	X	0	1	3	0
Telequip Radio Co.	X	1	0	1	1
Teletone Radio Co.	A	1	0	2	1
Televox Inc.	C	0	1	1	0
Telicon Corp.	X	1	0	2	0
Templeton Radio Co.; Templeton Radio Mfg. Corp.	AAAA	1	0	4	1
Terminal Radio Corp.	B	0	1	4	0
Transmitter Equipment Mfg. Co., Inc.	AA	0	0	4	0
Trav-Ler Karenold Radio & Television Corp.	AAA	1	0	17	1
Trylon Radio Laboratories	D	1	0	0	0
Union Electronics Corp.	X	1	0	1	0
United Manufacturing & Service Co.	A	0	1	1	0
United Pressed Products Co.	B	1	0	1	0
United States Television Mfg. Corp.	A	1	0	5	1
Universal Electronics Corp.	X	0	0	0	0
University Laboratories; University Loudspeakers	AA	0	1	2	0
Utah Radio Products Co.	AAAA	0	0	15	0
Vertrod Mfg. Co.	E	0	0	4	0
Walker-Jimmieson, Inc.	A	0	1	4	0
Warwick Mfg. Corp.	X	0	1	3	1
Washington Institute of Technology Inc.	AA	0	0	6	0
Waterman Products Co., Inc.	X	0	1	2	0
Weber-Knapp Co.	AA	0	0	3	0
Webster Electric Co.	AAAA	0	0	4	0
Wells-Gardner Co.	AAAA	0	1	20	1
Western Coil & Electrical Co.	B	0	1	24	0
Western Electric Co.	AAAA	0	0	9	0
Westinghouse Electric & Mfg. Co.	AAAA	0	0	25	1
Wickes Engineering & Construction Co.	AAA	0	0	0	0
Wilcox Electric Co., Inc.	AAAA	0	0	7	0
Zenith Radio Corp.	AAAA	1	0	22	1