Title:
Display device
United States Patent 2598755
US Patent References:
Display unit
- - 2139377
Lantern slide construction kit
- - 2186827
/2283026.html
- - 2283026
Display unit
- - 2139377
Lantern slide construction kit
- - 2186827
/2283026.html
- - 2283026
Inventors:
Birch, Thomas H.
Publication Date:
06/03/1952
View Patent Images:
Export Citation:
Assignee:
Birch, Thomas H.
Primary Class:
Other Classes:
40/734, 156/249, 156/290, 156/99
International Classes:
A47G1/06; G09F1/02; G09F1/00
Foreign References:
| AT139341B | ||||
| GB567181A |