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Powered invalid chair and handle control therefor
US 2,742,973 A
Filed
: 01/28/1953
Issued
: 04/24/1956
Est. Priority Date
: 02/01/1952
Status: Expired due to Term
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Current Assignee
Ingolf Johannesen Hans Arne
Original Assignee
Ingolf Johannesen Hans Arne
Inventors
INGOLF JOHANNESEN HANS ARNE
Application Number
US03/333,810
Time in Patent Office
1,182 Days
Field of Search
US Class Current
180/8.2
CPC Class Codes
A61G 5/061
for climbing stairs
A61G 5/065
with three or more wheels m...
Y10S 180/907
Motorized wheelchairs
Y10S 280/10
Stair climbing chairs
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