Traffic signal systems
United States Patent 3254324

Inventors:
Leonard, Casciato
Josef, Kates
Publication Date:
05/31/1966
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Assignee:
Leonard, Casciato
Josef, Kates
Primary Class:
340/909
Other Classes:
701/117
International Classes:
G08G1/081; G08G1/07
US Patent References:
2963595Relay switching circuit
2999999Highway traffic control system
3079587Interlinking system for traffic actuated control apparatus
3090032Automatic traffic signalling systems
Foreign References:
GB442555A
GB488796A
GB521588A
GB535709A
GB719121A