Title:
Stair climbing chair
United States Patent 3226128


Inventors:
Grier Jr., Robert C.
Application Number:
US30743063A
Publication Date:
12/28/1965
Filing Date:
09/09/1963
Assignee:
Grier Jr., Robert C.
Primary Class:
Other Classes:
280/5.26, 280/11, 280/DIG.10, 301/47
International Classes:
A61G5/06
View Patent Images:
US Patent References:
3142351Stair climbing wheelchair1964-07-28
3133742Stairclimbing wheelchair1964-05-19
2504511Traction device1950-04-18
Foreign References:
DE187291C