Book support device
United States Patent 3408032
Inventors:
Francis, Donald W.
Publication Date:
10/29/1968
View Patent Images:
Export Citation:
Primary Class:
Other Classes:
248/447.100, 297/188.180, 248/447.200, 248/451, 248/454, D19/91
International Classes:
A47B23/00
Foreign References:
| DE492455C | ||||
| GB608077A | ||||
| GB659508A | ||||
| GB670049A |