US PATENT SUBCLASS 180 / 9.22
.~.~.~ Guided by walking attendant

Current as of: June, 1999
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180 /   HD   MOTOR VEHICLES

7.1  DF  SPECIAL DRIVING DEVICE {6}
9  DF  .~ Portable track {2}
9.1  DF  .~.~ Endless, flexible {12}
9.22.~.~.~ Guided by walking attendant

DEFINITION

Classification: 180/9.22

(under subclass 9.1) Motor vehicles provided with means by which the vehicle may be supported or guided by a walking

attendant.

(1) Note. Motorized stair climbers using endless tread drives will be found in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.1, for a motor vehicle steered by a walking attendant.

SEE OR SEARCH CLASS

172, Earth Working, 258, for an earth working implement supported on an endless track motor vehicle which is guided by a walking attendant.