US PATENT SUBCLASS 172 / 393
.~ Spaced parallel runners with tool mounted therebetween

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

387  DF  WITH WHEEL SUBSTITUTE (E.G., RUNNER, ETC.) {6}
393.~ Spaced parallel runners with tool mounted therebetween

DEFINITION

Classification: 172/393

(under subclass 387) Apparatus in which the wheel substitute comprises a pair of spaced parallel runners, said runners having an earth working element associated therewith so that said element is positioned between and supported by both runners.

SEE OR SEARCH CLASS

111, Planting,

138, for sled frames claimed in combination with a planting machine.