US PATENT SUBCLASS 172 / 686
.~.~ Right and left hand type


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}
686.~.~ Right and left hand type


DEFINITION

Classification: 172/686

(under subclass 685) Apparatus in which the earth-engaging elements of a pair are nonidentical or positioned in a nonidentical way so as to function in a right and left handed manner in working the earth rather than in an identical manner, i.e., the elements are so constructed and located as to be mirror images of each other.

SEE OR SEARCH THIS CLASS, SUBCLASS:

159, for right and left hand tools with an intermediate symmetrical tool.

204+, for alternately usable right and left hand-type tools.

642, for right and left hand tools which are adjustable with respect to each other.