US PATENT SUBCLASS 209 / 287
.~.~.~ Reciprocating and rotating

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

233  DF  SIFTING {16}
*  DD  .~ Drum sifters {2}
*  DD  .~.~ Horizontal and inclined {4}
287.~.~.~ Reciprocating and rotating

DEFINITION

Classification: 209/287

(under subclass 233) Cylindrical or drum sifters mounted with their axes in horizontal or inclined position and having both reciprocating and rotating motion.