US PATENT SUBCLASS 209 / 13
.~ Aqueous suspension, sifting, and stratifying

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

12.1  DF  PLURAL, DIVERSE SEPARATING OPERATIONS {17}
13.~ Aqueous suspension, sifting, and stratifying

DEFINITION

Classification: 209/13

(under subclass 12.1) Methods and apparatus which include aqueous suspension, sifting, and stratifying.

SEE OR SEARCH THIS CLASS, SUBCLASS:

14, and 44, for a combination including sifting and stratifying.

17, for a combination of aqueous suspension and sifting.

18, for a combination of aqueous suspension and stratifying.

155+, for particulars of aqueous suspension separators.

233+, for particulars of sifters. 422+, for particulars of stratifiers.