3M Company
A.W. Sperry Instruments
Action Threaded Products

Advanced AMR Technologies
Alan Wire Company
Alcoa
Accessories
Alcoa Fujikura
American Midwest Power
American Polywater Corp.
Amprobe Instruments
Anderson Electrical Products
Aqua-tronics
Astra Transformers, Gec Durham
Atlas - Maclean Power
Bartlett Manufacturing co.
Bashlin Industries
Bekaert
Belden - Intech/ici
Berko Electric
Bethea - Maclean Power
Blackburn - Thomas & Betts
Brady Usa Inc.
Brooks Manufacturing Co.
Buckingham
C&D Batteries
Cadweld - Erico Electrical
Campbell Stringing Blocks
Cantex
Carlon
Central Moloney Inc.
CertainTeed
Cisco Systems
Coffing Hoists
Commonwealth Sprague
Continental - Maclean Power
Condux International, Inc.
Corrpro Companies Inc.
CRC Industries
Custom Plastics

Dofasco Tubular Products
Dracon
Dulmison
Durham Company
Durham Test Switches
Dynatel - 3M
E.J. Brooks/Eckstrom Industries
Eastern Research
Elastimold - Thomas & Betts
Engineering Unlimited
Erico Electrical Products
Eritech
Estex
Ferraz Shawmut
Fisher Pierce
Fluke Manufacturing
Fluke Networks
Formex
Galvotec Alloys
GE Energy
General Cable Corp.
General Electric Company
   Lamps
   Lighting Fixtures
Globe Batteries
G.N.B. Batteries
Greenlee
H.D. Electric Company
H.K. Porter Tools
Hastings Fiber Glass Products
Hendrix Wire and Cable
Hipotronics
Hisco
Hughes Brothers
Huskie Tools
Hydrocom - Maclean Power
IDEAL Industries
Intermatic
Irwin Tool Company

Isk Biotech
Joslyn Hi-Voltage
Joslyn-Maclean Power
KADDAS Enterprises, Inc.
Kellems, Division of Hubbell
Klein Tools Inc.
La Marche Products
Laminated Wood Systems
Lewis Manufacturing Co.
Lorain Products - Electrical Products Division
M-R-S Inc.
MacLean Power Systems
Maysteel LLC
Meyer Steel Structures
Midwest Electrical Products
National Chem Lab
National Strand Products
Nehring Electrical Works
New Basis
Newell Porcelain
Nexans
Ngk-Locke Insulators
Nicopress
Noran Tel
Nordic Fiberglass Inc.
Okonite Company
Oshkosh Tool Co.
Pairgain Technologies
Panduit - Pan-Net
Pen-Cell Plastics
Pennington Crossarm Co.
Penn Union Corp.
Pentech - Maclean Power
Porcelain Products Co.
Premax
PRESCO
P & R Power Line Markers
Quazite
Radar Engineers
Rad Data Communications
Reef industries Inc.
Reliable Power - Maclean Pwr
Reltec - Reliable Elect.
Remke Industries
Ripley Company
Ronk
Royal Switchgear
Rycom
S&C Electric Company
Safety-Line Tools
Salisbury Co., W.H.
SEECO
SEFCOR, Inc.
Shakespeare Fiberglass
Sherman & Reilly Inc.
Southern States LLC
Southwire Company
Speed Systems Cable Tools
Square-D Company
Sterling Locks
Stringer
Suttle Apparatus Corp.
Symcom
Thermodynamics
Thomas & Betts
Meyer-lehigh
TIF Industries
Trayer Engineering Corp.
Turner Electric Corp.
Universal Enterprises, Inc.
Uticom Systems Inc.
Utilco Connectors
UUS Transformers
Valmont Industries
Wiegmann
W.J. Whatley