US PATENT SUBCLASS 172 / 680
.~.~ Vertical

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

677  DF  WITH DRAFT DETAIL {2}
679  DF  .~ Adjustable {1}
680.~.~ Vertical

DEFINITION

Classification: 172/680

(under subclass 679) Apparatus wherein the means for hitching the implement to the propelling means is adjustable in a vertical sense.

(1) Note. For meaning of "adjustable" see the class definition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

396, for a vertically adjustable or selectively lockable hitch combined with a vertically adjustable ground support.