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CODE
LETTER
A
B
C
D
E
F
G
H
H P
I
J
K
L
M
N
0
P
Q
R
S
T
U
V
W
X
Y
Z
A A
BB
cc
DD
EE
FF
GG
HH
II
JJ
KK
LL
M M
NN
00
PP
QQ
RR
ss
TT
uu
vv
ww
xx
YY
zz
AB
A C
AD
AE
AF
A G
A H
A I
A J
TO
M A N U FACTU RER
Aerovox Corp.
Allen-Bradley Co.
Amperite Co.
Arrow,
Hart
& Hegemon
Bussman Manufacturing Co.
Carborundum Co.
Centrala
b
Cinch-Jones Mfg. Co.
Hewlett-Packard Co.
Clarostat
Mfg. Co.
Cornell
Dubilier
Elec.
Co.
Hi-Q Division
of
Aerovox
Erie
Resistor Corp.
Fed. Telephone & Radio Corp.
General Electric
Co.
General
Electric Supply Corp.
Girard-Hop
kins
Industrial Products Co.
International Resistance
Co.
Lectrohm Inc.
Littlefuse
Inc.
Maquire Industries
Inc.
Micamold Radio Corp.
Oak Manufacturing Co.
P. R.
Mallory
Co.,
Inc.
Radio Corp.
of
America
Sangamo
Electric
Co.
Sarkes
Tanian
Signal Indicator Co.
Sprague
Electric
Co.
Stackpole Carbon Co.
Sylvania
Electric
Products Co.
Western Electric
Co.
Wilkor Products,
Inc.
Amphenol
Dial Light Co.
of
America
Leecraft Manufacturing Co.
Switchcraft,
Inc.
Gremar
Manufacturing Co.
Carad Corp.
Electra
Manufacturing Co.
Acro Manufacturing
co.
Alliance Manufacturing CO.
Arc0
Electronics, Inc.
Astron Corp.
Axel Brothers
Inc.
Belden Manufacturing Co.
Bird
Electronics
Corp.
Barber
Colman
Co.
Bud Radio
Inc.
Allen D. Cardwell Mfg. Co.
Cinema Engineering Co.
Any brand tube meeting
RETMA standards.
Corning
Glass
Works
Dale Products,
Inc.
The Drake Mfg. Co.
Elco
Corp.
Hugh H. Eby Co.
Thomas A. Edison,
Inc.
Fansteel Metallurgical Corp.
General Ceramics
&
Steatite
Corp.
The Gudeman Co.
DESIGNATE THE
ADDRESS
New
Bedford, Mass.
Milwaukee
4, Wis.
New York, N. Y.
Hartford, Conn.
St. Louis, Mo.
Niagara Falls, N. Y.
Milwaukee I, Wis.
Chicago
24,
111.
Palo Alto, Calif.
Dover, N. H.
South Plainfield, N. J.
Olean,
N. Y.
Erie
6,
Pa.
Clifton, N.
J.
Schenectady 5, N. Y.
Son
Francisco, Calif.
Oakland, Calif.
Danbury, Conn.
Philadelphia 8,
Pa.
Chicago
20,
111.
Des
Plaines,
111.
Greenwich, Conn.
Brooklyn
37,
N. Y.
Chicago 10, 111.
Indianapolis, Ind.
Harrison, N. J.
Marion, 111.
Bloomington, Ind.
Brooklyn
37,
N. Y.
North Adams,
Mass.
St.
Marys,
Pa.
Warren,
Pa.
N e w
York 5, N. Y.
Cleveland, Ohio
Chicago 50, 111.
Brooklyn
37,
N. Y.
N e w
York, N. Y.
Chicago
22,
111.
Wakefield,
Mass.
Redwood City, Calif.
Kansas City,
Mo.
Columbus
16,
Ohio
Alliance, Ohio
N e w
York
13,
N. Y.
East Newark,
N.
J.
Long Island City, N. Y.
Chicago
44,
111.
Cleveland
14,
Ohio
Rockford, 111.
Cleveland
3,
Ohio
Plahville, Conn.
Burbank, Calif.
Corning, N. Y.
Columbus, Neb.
Chicago
22,
111.
Philadelphia
24,
Pa.
Philadelphia
44,
Pa.
West Orange, N. J.
North Chicago, 111.
Keasbey, N. J.
Sunnyvale,
Calif.
MANUFACTURERS
CODE
LETTER
AK
AL
A M
A N
A 0
AP
AQ
AR
AS
AT
A U
AV
A W
AX
AY
A Z
BA
BC
BD
BE
BF
B G
BH
BI
BJ
BK
BL
BM
BN
BO
BP
BQ
BR
BS
BT
BU
BV
BW
BX
BY
BZ
C A
CB
CD
CE
CF
C G
C H
C I
C J
CK
C L
C M
C N
co
CP
CQ
CR
cs
CT
cu
cv
cw
MANUFACTURER
Hammerlund Mfg. Co.,
Inc.
Industrial Condenser Corp.
lnsuline Corp. of America
Jennings Radio Mfg. Corp.
E. F. Johnson Co.
Lenz Electric Mfg. Co.
Micro-Switch
Mechanical Industries Prod. Co.
Model Enq. & Mfg.,
Inc.
The Muter Co.
Ohmite Mfg. Co.
Resistance Products Co.
Radio Condenser Co.
Shallcross Manufacturing Co.
Solar
Manufacturing Co.
Sealectro Corp.
Spencer Thermostat
Stevens
Manufacturing Co.
Torrington Manufacturing Co.
Vector
Electronic
Co.
Weston
Electrical
Inst. Corp.
Advance
Electric
& Relay Co.
E. 1. DuPont
Electronics
Tube Corp.
Aircraft Radio Corp.
Allied
Control
Co.,
Inc.
Augat Brothers,
Inc.
Carter Radio Division
CBS
Hytron
Radio &
Electric
Chicago Telephone Supply
Henry
L. Crowley Co., Inc.
Curtiss-Wright Corp.
Allen B. DuMont Labs
Excel
Transformer Co.
General
Radio Co.
Hughes Aircraft Co.
International Rectifier
Corp.
James
Knights Co.
Mueller
Electric
Co.
Precision
Thermometer &
Inst.
Co.
Radio
Essentials Inc.
Raytheon Manufacturing Co.
Tung-Sol Lamp Works,
Inc.
Varian Associates
Victory Engineering Corp.
Weckesser
Co.
Wilco Corporation
Winchester Electronics,
Inc.
M a k o
Tool & Die
Oxford
Electric
Corp.
Camloc-Fastener Corp.
George K.
Garrett
Union Switch & Signal
Radio Receptor
Automatic &
Precision
Mfg.
co.
Bassick
Co.
Birnbach Radio Co.
Fischer Specialties
Telefunken
(c/o
MVM, Inc.)
Potter-Brumfield Co.
Cannon
Electric
Co.
Dynac,
Inc.
Good-All
Electric
Mfg. Co.
ADDRESS
New
York
1 ,
N. Y.
Chicago
18,
111.
Manchester, N. H.
Son Jose,
Calif.
Waseca,
Minn.
Chicago
47,
111.
Freeport, 111.
Akron
8,
Ohio
Huntington, Ind.
Chicago
5,
111.
Skokie,
111.
Harrisburg, Pa.
Camden
3,
N. J.
Collingdale,
Pa.
Los Angeles 58, Calif.
New
Rochelle, N. Y.
Attleboro,
Mass.
Mansfield, Ohio
Van
Nuys,
Calif.
Los Angeles b5, Calif.
Newark
5,
N. J.
Burbank, Calif.
Son
Francisco, Calif.
Philadelphia 18,
Pa.
Boonton, N.
J.
New
York
21,
N. Y.
Attleboro, Mass.
Chicago, 111.
Danvers,
Mass.
Elkhart, Ind.
West Orange, N. J.
Carlstadt, N. J.
Clifton, N.
J.
Oakland, Calif.
Cambridge
39, Mass.
Culver City,
Calif.
El Segundo, Calif.
Sandwich, 111.
Cleveland, Ohio
Philadelphia
30,
Pa.
Mt. Vernon, N. Y.
Newton,
Mass.
Newark
4, N.
J.
Palo
Alto, Calif.
Union, N. J.
Chicago
30,
111.
Indianapolis, Ind.
Santa
Monica, Calif.
Los Angeles
42,
Calif.
Chicago 15, 111.
Paramus,
N. J.
Philadelphla
34,
Pa.
Swissvale,
Pa.
New York
1 I, N.
Y.
Yonkers, N. Y.
Bridgeport
2,
Conn.
N e w
York 13, N. Y.
Cincinnati
6, Ohio
N e w
York, N. Y.
Princeton,
Ind.
Los Anqeles, Calif.
Palo
Alto, Calif.
Ogallala, Nebr.
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