Title:
Combined pedestrian traffic signal and advertising device
United States Patent 2503574
Inventors:
Allen, John S.
Publication Date:
04/11/1950
Export Citation:
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Assignee:
WALKOLITE COMPANY INC
Primary Class:
40/565
Other Classes:
40/446, 40/545, 340/925, 362/152, D10/109.1
International Classes:
E01F9/053; G09F13/26
View Patent Images:
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US Patent References:
2280010Sign
1965874Illuminating device
1963293Traffic signal device
1051354N/A
0682117N/A
Foreign References:
GB191411906A