Title:
Stair climbing wheel chair
United States Patent 3104112
US Patent References:
/0838228.html
- - 0838228
/0865514.html
- - 0865514
Self-propelled wheel chair
- - 2643898
/0838228.html
- - 0838228
/0865514.html
- - 0865514
Self-propelled wheel chair
- - 2643898
Inventors:
Crail, Jesse W.
Publication Date:
09/17/1963
View Patent Images:
Export Citation:
Assignee:
Crail, Jesse W.
Primary Class:
Other Classes:
280/5.280, 280/211, 280/250.100
International Classes:
A61G5/06; A61G5/08; A61G5/00
Foreign References:
| DE215765C | ||||
| DE717241C | ||||
| GB137096A |