US PATENT SUBCLASS 172 / 692
.~.~.~ Angularly adjustable bar

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

681  DF  TOOL, STANDARD OR CONNECTION {32}
685  DF  .~ Plural tools {6}
691  DF  .~.~ Mounted on transverse or oblique tool bar {2}
692.~.~.~ Angularly adjustable bar

DEFINITION

Classification: 172/692

(under subclass 691) Apparatus having means to selectively adjust the beam on the frame at various angles to the direction of the line of travel.