US PATENT SUBCLASS 209 / 275
.~.~ Reciprocating

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}
275.~.~ Reciprocating {1}
276  DF  .~.~.~> With agitators {2}

DEFINITION

Classification: 209/275

(under subclass 274) Sifters whose material-receiving surfaces are curved or bent in concave or convex form and are given a reciprocating movement.