Title:
Display apparatus
United States Patent 2507857


Inventors:
Johnson, Claude U.
Application Number:
US57738745A
Publication Date:
05/16/1950
Filing Date:
02/12/1945
Assignee:
Johnson, Claude U.
Primary Class:
Other Classes:
160/232, 472/77
International Classes:
A47F11/02; A63J1/02
View Patent Images:
US Patent References:
2158343Display device1939-05-16
2006573Changeable sign1935-07-02
1838685Imprint mounting for outdoor advertising structures1931-12-29
1675357Advertising sign1928-07-03
1583720Adjustable sign1926-05-04
1517551Signboard1924-12-02
1446367Extensible picture frame1923-02-20
0638434N/A1899-12-05
0513164N/A1894-01-23