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STAIR-CLIMBING VEHICLE
US 3,450,219 A
Filed
: 03/13/1967
Issued
: 06/17/1969
Est. Priority Date
: 03/13/1967
Status: Expired due to Term
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Current Assignee
John F. Fleming
Original Assignee
John F. Fleming
Inventors
Fleming, John F.
Application Number
US04/622,700
Time in Patent Office
827 Days
Field of Search
US Class Current
180/8.2
CPC Class Codes
B60L 15/20
for control of the vehicle ...
B60L 2200/16
Single-axle vehicles
B60L 2200/40
Working vehicles
B60L 2240/423
Torque
B62B 2205/14
Retractable wheels
B62B 5/0033
Electric motors
B62B 5/026
with spiders or adapted wheels
B62D 51/04
the driver walking
Y02T 10/64
Electric machine technologi...
Y02T 10/72
Electric energy management ...
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