73238543
Nov 8, 1979
Mar 9, 1982
Relays; Switches; Magnetic, Induction, Pressure, Sonic, and Microwave Sensitive Industrial Detectors; Magnetic, Induction, Pressure, Sonic, and Microwave Sensitive Traffic Detectors; Vehicle Traffic Controllers; Timers; Counters; Apparatus for Automatically Monitoring and/or Operating Industrial and Municipal Processing and Control Systems; Industrial Temperature Controllers; Industrial Count Controllers; and Parts Therefor
Electrical and Scientific Apparatus