US PATENT SUBCLASS 172 / 43
.~.~ With ground support vertically adjustable relative to frame

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

35  DF  WITH DRIVE MEANS FOR TOOL OR CLEANER {37}
42  DF  .~ Guided by walking attendant {1}
43.~.~ With ground support vertically adjustable relative to frame

DEFINITION

Classification: 172/43

(under subclass 42) Apparatus comprising a frame, a driven tool supported by said frame and ground support means vertically adjustable relative to the frame.

(1) Note. For the meaning of adjustable see "adjustable" in the class definition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

78, and 80, for other driven earth working elements combined with wheel substitutes.

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