US PATENT SUBCLASS 172 / 739
.~.~ Adjustable about horizontal transverse axis

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

681  DF  TOOL, STANDARD OR CONNECTION {32}
734  DF  .~ Adjustable {5}
739.~.~ Adjustable about horizontal transverse axis {1}
740  DF  .~.~.~> Tool adjustably connected to standard

DEFINITION

Classification: 172/739

(under subclass 734) Apparatus in which the earth working element is adjustable about an axis transverse to the line of travel, the axis substantially paralleling the earth surface.

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