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Stair climbing wheel chair
US 3,049,364 A
Filed
: 04/07/1961
Issued
: 08/14/1962
Est. Priority Date
: 04/07/1961
Status: Expired due to Term
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Current Assignee
Eugene O. Clay
Original Assignee
Eugene O. Clay
Inventors
Clay, Eugene O.
Application Number
US04/101,412
Time in Patent Office
494 Days
Field of Search
US Class Current
280/211
CPC Class Codes
A61G 5/023
acting directly on hubs or ...
A61G 5/026
Cranks or hand wheels
A61G 5/061
for climbing stairs
A61G 5/066
with endless belts
Y10S 280/10
Stair climbing chairs
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