US PATENT SUBCLASS 172 / 401
.~.~ Three or more adjustable wheels on different axles interconnected

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

395  DF  WITH GROUND SUPPORT VERTICALLY ADJUSTABLE RELATIVE TO FRAME {10}
400  DF  .~ Actuator and interconnected means for adjusting wheels on different axles {4}
401.~.~ Three or more adjustable wheels on different axles interconnected {1}
402  DF  .~.~.~> With power take-off from self-adjusted wheel

DEFINITION

Classification: 172/401

(under subclass 400) Apparatus in which three or more wheels each on different axles are affected by the action of the interconnecting means.