US PATENT SUBCLASS 209 / 172.5
.~.~.~.~ Suspension

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

132  DF  FLUID SUSPENSION {2}
155  DF  .~ Liquid {5}
162  DF  .~.~ Floating {3}
172  DF  .~.~.~ Gravity liquid {3}
172.5.~.~.~.~ Suspension

DEFINITION

Classification: 209/172.5

(under subclass 172) Methods and means wherein the constituents of a mixture having lesser specific gravity are separated from those of greater specific gravity by flotation on a liquid system of intermediate specific gravity which system is a suspension of solids.