US PATENT SUBCLASS 172 / 80
.~ With wheel substitute (e.g., runner, etc.)


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

35  DF  WITH DRIVE MEANS FOR TOOL OR CLEANER {37}
80.~ With wheel substitute (e.g., runner, etc.)


DEFINITION

Classification: 172/80

(under subclass 35) Apparatus comprising a runner or other ground contacting supporting means other than a wheel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

42+, for driven earth working elements which are mounted on a frame, the frame being provided with (1) a ground support means and (2) a means for guiding the same over the earth by a walking attendant.

76, for driven implements with ground supports and articulated connections to vehicles.

240+, for ground supports for nondriven earth working tools,

which supports only engage the ground while transporting said tools.

387+, for wheel substitutes which are combined with nondriven earth working elements.