US PATENT SUBCLASS 172 / 235
.~.~ Latch releasing

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

233  DF  WITH OBSTRUCTION FEELER FOR MOVING OR RELEASING IMPLEMENT TO AVOID OBSTRUCTION (INCLUDES DAM FORMER) {1}
234  DF  .~ Relatively movable {1}
235.~.~ Latch releasing

DEFINITION

Classification: 172/235

(under subclass 234) Apparatus in which the feeler means operates a lock or latch to release the implement part so as to be free to move to another position to avoid the obstruction.