US PATENT SUBCLASS 172 / 640
.~ Tool group pivotally adjustable about horizontal axis


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

613  DF  PLURAL RELATIVELY MOVABLE TOOLS {14}
640.~ Tool group pivotally adjustable about horizontal axis


DEFINITION

Classification: 172/640

Apparatus under subclas 613 in which at least one earth working element group is pivotally mounted on and selectively adjustable as a unit about a horizontal axis to thereby adjust the position of the earth working element group with respect to another earth working element or earth working element group.

(1) Note. See class definition meaning of "adjustable".

SEE OR SEARCH THIS CLASS, SUBCLASS:

459+, for tools lifted on a wheeled frame which are pivotal about a longitudinal axis.