US PATENT SUBCLASS 172 / 725
.~.~ With separable vertical cutter on centerline

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

681  DF  TOOL, STANDARD OR CONNECTION {32}
721  DF  .~ Non-rectangular, symmetrical type {8}
725.~.~ With separable vertical cutter on centerline

DEFINITION

Classification: 172/725

(under subclass 721) Apparatus in which the earth working element includes a separate member comprising a vertical cutting edge attached at the axis of symmetry of the tool.

SEE OR SEARCH THIS CLASS, SUBCLASS:

752, for unsymmetrical tools having separable parts one of which is a vertical longitudinal cutter.