US PATENT SUBCLASS 209 / 306
.~.~.~.~ With agitators

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  .~.~ Vertical {4}
305  DF  .~.~.~ Stationary {1}
306.~.~.~.~ With agitators

DEFINITION

Classification: 209/306

(under subclass 305) Stationary cylindrical or drum sifters having vertical axes associated with means for agitating the material being sifted.

SEE OR SEARCH THIS CLASS, SUBCLASS:

274, for sifters having concave or convex material receiving surface.