Title:
Traffic supervisory system
United States Patent 3195126

Inventors:
Barker, John L.
Publication Date:
07/13/1965
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Assignee:
LAB FOR ELECTRONICS INC
Primary Class:
342/59
Other Classes:
342/104, 340/943, 342/190, 340/934, 340/936
International Classes:
G08G1/01
US Patent References:
2659014Radioactivity well logging system
2817081Tracking system
2999999Highway traffic control system