US PATENT SUBCLASS 172 / 210
.~.~ Mast type hitch

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

204  DF  ALTERNATING FOR RIGHT OR LEFT HAND OPERATION (OTHER THAN SCRAPER) {10}
209  DF  .~ Interrelated tool lift and shift {2}
210.~.~ Mast type hitch

DEFINITION

Classification: 172/210

(under subclass 209) Apparatus in which the means for raising the earth working means is a mast-type hitch.

(1) Note. See this class, subclass 439 for the definition of mast-type hitch.

SEE OR SEARCH THIS CLASS, SUBCLASS:

445, for tools carried by a mast-type hitch including an auxiliary means which is operated by the vertical movement of the hitch.