US PATENT SUBCLASS 209 / *
.~.~.~ Rotating

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

422  DF  STRATIFIERS {6}
*  DD  .~ With liquid treatment {3}
*  DD  .~.~ Receptacles {3}
*.~.~.~ Rotating {2}
451  DF  .~.~.~.~> Horizontal or inclined axis {1}
453  DF  .~.~.~.~> Vertical axis