US PATENT SUBCLASS 209 / 356
.~.~.~.~.~.~ Zigzag

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

233  DF  SIFTING {16}
*  DD  .~ Plane sifters {2}
*  DD  .~.~ Horizontal and inclined {4}
352  DF  .~.~.~ Stationary {2}
353  DF  .~.~.~.~ Multiple {2}
355  DF  .~.~.~.~.~ Superposed {1}
356.~.~.~.~.~.~ Zigzag

DEFINITION

Classification: 209/356

(under subclass 355) Pluralities of flat stationary horizontal or inclined sifters one over-lying the other and each sifter reversed in inclination relatively to the adjacent sifter or sifters.