US PATENT SUBCLASS 209 / 279
.~.~ Rotating

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

233  DF  SIFTING {16}
274  DF  .~ Concave and convex sifters {3}
279.~.~ Rotating {1}
280  DF  .~.~.~> With agitators

DEFINITION

Classification: 209/279

(under subclass 274) Sifters which are rotating and have material-receiving surfaces concave or convex in shape.

SEE OR SEARCH THIS CLASS, SUBCLASS:

350+, for rotating horizontal or inclined plane sifters.