US PATENT SUBCLASS 172 / 346
.~.~ Plural tools independently or oppositely manipulable

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

329  DF  GUIDED BY WALKING ATTENDANT; SUPPORTED, PROPELLED, OR HELD IN POSITION BY ATTENDANT {7}
332  DF  .~ Tool manipulated with respect to mounting frame {5}
346.~.~ Plural tools independently or oppositely manipulable

DEFINITION

Classification: 172/346

(under subclass 332) Apparatus including a plurality of earth working elements which may be manipulated individually or are so connected as to move in opposite directions when manipulated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

333+, for arch wheel frame implements provided with a plurality of earth working elements which are independently or oppositely manipulated.

345, for plural earth working elements which are manipulated about a longitudinal axis.