Title:
Collapsible signboard
United States Patent 2591494


Inventors:
Asachika, George R.
Application Number:
US12048349A
Publication Date:
04/01/1952
Filing Date:
10/10/1949
Assignee:
Asachika, George R.
Primary Class:
Other Classes:
40/618
International Classes:
G09F7/00
View Patent Images:
US Patent References:
1889910Sign board1932-12-06
1462302Sliding door and tracks therefor1923-07-17
0144917N/A1873-11-25