US PATENT SUBCLASS 172 / 57
.~.~ Laterally spaced tools

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

35  DF  WITH DRIVE MEANS FOR TOOL OR CLEANER {37}
48  DF  .~ Plural driven tools {6}
57.~.~ Laterally spaced tools {3}
58  DF  .~.~.~> Longitudinal axes
59  DF  .~.~.~> Vertical axes
60  DF  .~.~.~> Transverse axes

DEFINITION

Classification: 172/57

(under subclass 48) Apparatus in which the plural driven earth working elements individually spaced transversely of the direction of travel.