US PATENT SUBCLASS 172 / 697
.~.~.~ Tools in transverse alignment

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}
694  DF  .~.~ Laterally spaced tools {3}
697.~.~.~ Tools in transverse alignment

DEFINITION

Classification: 172/697

(under subclass 694) Apparatus consisting of two or more elements aligned in a direction substantially 90 deg. to the line of travel.