ABB
AEMC
AGASTAT
ALCAN
ALCOSWITCH
ALLEN BRADLEY
ALLIS-CHALMERS
ALPHA
ALSTOM
AMP
AMPHENOL
AMPROBE
ANDERSON CONN.
ARMSTRONG INT’L
ASCO
A.W. SPERRY

BALL CORP.
BARBER COLMAN
BASLER
BECKMAN INST.
BELDEN WIRE
BENDIX
BIDDLE INST.
BLACKBURN
BROOKS
BROWN BOVERI
BRUSH FUSES
BURNDY
BUSSMAN

CABLEC
CADWELL
CARBONE FERRAZ
CATERPILLAR
CHICAGO MINIATURE
CHROMALOX
CLEAVELAND PRICE
CONTINENTAL ELEC.
CORNELL-DUBILIER
CRC CHEMICALS
CRESCENT
CROSBY
CURLEE
CUTLER HAMMER

DATA INSTUMENTS
DIAMOND POWER
DELTA STAR (H.K.P.)
DELTA UNIBUS
DRESSER INDUSTRIES
DULMISON

EATON
ELASTIMOLD
ELECTROSWITCH
EMD
EMERSON PROCESS
ENDRESS + HAUSER
ESTERLINE ANGUS
E.T.A.
EUCLID
EXTECH

FCI
FLUKE
FINCO
FISHER
FISHER PIERCE
FLOWSERVE
FMC
FOSTER WHEELER
FOXBORO
FUJI ELETRONIC
FURNAS

HAMMOND
HAPCO
HATHAWAY
HEAVY DUTY
HEINEMANN
HEWLETT-PACKARD
HITACHI
HONEYWELL
HOWARD IND.
HOYT
HUBBELL

IBM
ILEX SYSTEMS
ILSCO
IMO
INGERSOLL-RAND
INOTEK
INTERMATIC
INT’L RECTIFIER
I-R
ISOREG
ITT
ITT CANNON
ITT SCHADOWKATO
KEARNEY
KILLARK
KIM LIGHTING

LAKESHORE
LAPP INSULATOR
LEEDS & NORTHRUP
LEGRAND P & S
LEVITON
LFE
LINE POWER MFG.
LITTLEFUSE INC.

MAGNETEK
MALLORY
McGRAW EDISON
MEHTA TECH INC.
MELTRIC CORP.
MEPCO/CENTRALAB
MERET INC.
MICROSWITCH
MILLTRONICS
MOHAWK CABLE
MOTOROLA
MP HUSKY
MSA INSTRUMENTS
MURATA ERIE

NATIONAL
NELSON
NIAGARA
NTE

OHIO GEAR
OHMITE
OXFORD LAMPS
OZ-GEDNEY

GC
GENERAL CABLE
GENERAL ELECTRIC
GENERAL MOTORS
GLYPTAL
GORDOS
GOULD
G & W

PACE
PARAGON
PASS & SEYMOUR
PHILIPS
PLP
PORCELAIN PROD.
POTTER-BRUMFIELD
POWELL ELECT. MFG.
POWER CONTROL
POWER LINE HWRE.
POWEREX
P-W CABLE TRAY

RAYCHEM
RCA
REDCO
RELIANCE
RIGALITE
ROME CABLE
RUSSELLSTOLL

SAFETY LINE
SATIN AMERICA
S & C
SCOTT AVATION
SEFCOR
SEL
SIEMENS
SIMPLEX INC.
SIMPSON INST.
SOLA
SQUARE D
SULZER
STONCO
STRUTHERS DUNN
SYLVANIA

QUALITROL

TRACOR WESTRONICS
TEGAN INST.
TEXAS INST.
THERMOWELD
THOMAS & BETTS
3M
TOPAZ
TOSHIBA
TRIPLETT
TRW
TYCO

UNIBUS INC.
UNIT RIG
UNITED TECHNOLOGIES
UNIVERSAL ELECTRIC
USCO POWER

VALMONT
VICKERS
WARD LEONARD
WESTINGHOUSE

YOKOGAWA
WABCO

ZENITH CONTROLS