Title:
Portable traffic signal having changing color illumination
United States Patent 3197757


Inventors:
Cesar, Porta
Application Number:
US27409063A
Publication Date:
07/27/1965
Filing Date:
04/19/1963
Assignee:
Cesar, Porta
Primary Class:
Other Classes:
340/331
International Classes:
G08G1/095; G08G1/0955; G09F21/02
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