| Electrical Equipment: |
The Abb Group Aitken Products, Inc. American Electric Lighting Autotron Control Products Conveyor COmponents Co. Cutler Hammer Products JEM Engineering & Manufacturing Line Master Switch Company Neeltran Transformers Releco Relays Siemens Energy & Automation Ogden Heating Products Venture Lighting Intl. Warrick Controls Watlow Heating |
|---|---|
| Traffic Signal Equipment: |
Cal MDS Radio Chapel Hill Manufacturing Component Products, Inc. Control Technologies, Inc. Demco Signals Mfg Co. Eberle Design, Inc. Econolite Control Porducts, Inc. JEM Engineering & Manufacturing McCain Signals Power Distribution & Control, Inc. Signal Equipment Co. - South Traffic Sensor, Inc. Utilinet Radio |
| Lamps: |
General Electric Sylvania Lamps Venture Lighting Intl. |