US PATENT SUBCLASS 172 / 659
.~ Adjustable about spaced horizontal axes

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

613  DF  PLURAL RELATIVELY MOVABLE TOOLS {14}
659.~ Adjustable about spaced horizontal axes {1}
660  DF  .~.~> Concurrent adjustment

DEFINITION

Classification: 172/659

(under subclass 613) Apparatus in which the plural earth working elements are separately mounted for pivotal movement from one position of adjustment to another about independent-spaced horizontally disposed axes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

739, for a single earth working element adjustable about a horizontal transverse axis.