US PATENT SUBCLASS 209 / 501
.~.~.~.~ Circuit

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

422  DF  STRATIFIERS {6}
484  DF  .~ Elements {9}
*  DD  .~.~ Fluid supply {2}
500  DF  .~.~.~ Liquid {1}
501.~.~.~.~ Circuit

DEFINITION

Classification: 209/501

(under subclass 500) Stratifier combinations including means for repeated return and reuse of the liquid employed to promote stratification, generally including special means for removing solids suspended in the liquid.

SEE OR SEARCH CLASS

210, Liquid Purification or Separation,

167+, and 194+ for filters having recirculation means.