US PATENT SUBCLASS 209 / 421
.~.~.~.~ Vehicles

Current as of: June, 1999
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209 /   HD   CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS

233  DF  SIFTING {16}
363  DF  .~ Elements {7}
409  DF  .~.~ Supports {7}
420  DF  .~.~.~ Portable {1}
421.~.~.~.~ Vehicles

DEFINITION

Classification: 209/421

(under subclass 420) Sifters especially constructed or adapted to be mounted, generally detachable, upon particular vehicles which have some function independent of the sifting.