US PATENT SUBCLASS 180 / 9.52
.~.~.~.~ Adjustable

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}
9.5  DF  .~.~.~ Track support mounted for vertical movement {2}
9.52.~.~.~.~ Adjustable

DEFINITION

Classification: 180/9.52

(under subclass 9.5) Motor vehicles wherein means are provided to selectively hold said supporting structure in

different vertical positions relative to the vehicle frame.

SEE OR SEARCH THIS CLASS, SUBCLASS:

9.28, for a vehicle provided with ground wheels and a flexible track apparatus, and in which the track apparatus may be selectively raised or lowered relative to the vehicle frame.