Title:
Traffic sign
United States Patent 3394674


Inventors:
Downing, Donald M.
Application Number:
US57700866A
Publication Date:
07/30/1968
Filing Date:
09/02/1966
Assignee:
DONALD M. DOWNING
Primary Class:
Other Classes:
40/475, D10/109.1
International Classes:
G08G1/09
View Patent Images:
US Patent References:
2624307Retractable traffic sign1953-01-06