US PATENT SUBCLASS 172 / 636
.~.~.~ Tools also adjustable about vertical or longitudinal axes

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

613  DF  PLURAL RELATIVELY MOVABLE TOOLS {14}
634  DF  .~ Parallel, pivotally adjusted tool bars {2}
635  DF  .~.~ With actuator {3}
636.~.~.~ Tools also adjustable about vertical or longitudinal axes

DEFINITION

Classification: 172/636

(under subclass 635) Apparatus in which the individual earth working elements are also adjustable about upright axes or axes which extend in the direction of travel.