Title:
Emergency highway signal
Document Type and Number:
United States Patent 2160426
Inventors:
Archer, George E.
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Publication Date:
05/30/1939
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Referenced by:
Export Citation:
Assignee:
Archer, George E.
Primary Class:
Other Classes:
248/472, D10/109, 116/173, 359/553, 248/188.700, 40/612
International Classes:
B60Q7/00