Pedestrian control signal
United States Patent 2793356
US Patent References:
Illuminated sign
- - 1795572

Light signal
- - 1802568

Signaling device
- - 1863532

High-visibility traffic signal
- - 2616957


Inventors:
Hart, Irwin M.
Publication Date:
05/21/1957
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Assignee:
WINKO MATIC SIGNAL COMPANY
Primary Class:
340/944
Other Classes:
40/573
International Classes:
G08G1/005