Computer Technology
Kessler-Ellis Products
Maple Systems
Ann Arbor Technologies
Patlite -- stack lights
Viewtronix
Nematron
Adaptive Displays
Xycom
Total Control Products (TCP)
Exor
Daktronics -- large scoreboard type displays
Adaptive Micro Systems -- LED messaging systems
American LED-gible -- Industrial electronic and LED signs
Ametek -- alarm panels
Christensen Display Products -- flat panel displays
Cyber Touch -- touch screens
