Title:
Wheel chair for regular and irregular surface travel
United States Patent 3231290
US Patent References:
Motor driven stair climbing hand truck
- - 2740484
Endless track supported invalid chair
- - 2751027
Stair-climbing wheel chair
- - 3111331
/3127188.html
- - 3127188
Stair-climbing wheel chairs
- - 3146841
Motor driven stair climbing hand truck
- - 2740484
Endless track supported invalid chair
- - 2751027
Stair-climbing wheel chair
- - 3111331
/3127188.html
- - 3127188
Stair-climbing wheel chairs
- - 3146841
Inventors:
Weyer, Paul P.
Publication Date:
01/25/1966
View Patent Images:
Export Citation:
Assignee:
Weyer, Paul P.
Primary Class:
International Classes:
A61G5/06; B62D55/075; A61G5/00; B62D55/00
Foreign References:
| GB541253A |