US PATENT SUBCLASS 172 / 690
.~.~ V-shaped frame

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}
690.~.~ V-shaped frame

DEFINITION

Classification: 172/690

(under subclass 685) Apparatus in which the earth working elements are mounted on two elongated members that are connected at one end and divergent or convergent in a horizontal plane in the direction of the line of travel.