US PATENT SUBCLASS 209 / 37
.~.~.~.~ With deposition

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

12.1  DF  PLURAL, DIVERSE SEPARATING OPERATIONS {17}
21  DF  .~ Gaseous suspension and sifting {2}
30  DF  .~.~ Successive {4}
36  DF  .~.~.~ Vertical current {1}
37.~.~.~.~ With deposition

DEFINITION

Classification: 209/37

(under subclass 36) Methods and means including steps or means for collecting part or all of the material suspended by the gaseous current.