US PATENT SUBCLASS 172 / 258
.~ Endless track or single driven wheel

Current as of: June, 1999
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172 /   HD   EARTH WORKING

256  DF  PROPULSION UNIT GUIDED BY WALKING ATTENDANT OR PART OF ARTICULATED VEHICLE {4}
258.~ Endless track or single driven wheel

DEFINITION

Classification: 172/258

(under subclass 256) Apparatus comprising an endless track traction means or a drive for one ground wheel only.

SEE OR SEARCH CLASS

280, Land Vehicles,

414.5, for articulated vehicles having an actuator for vertically moving a wheel of a trailing vehicle.