US PATENT SUBCLASS 172 / 688
.~.~.~ Staggered

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}
687  DF  .~.~ Longitudinally spaced rows {1}
688.~.~.~ Staggered

DEFINITION

Classification: 172/688

(under subclass 687) Apparatus in which the elements of one row are disposed to travel in the space not traversed by the elements in an adjacent row.