US PATENT SUBCLASS 210 / 221.1
.~.~.~ With outlet at surface, e.g., froth flotation, etc.

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

198.1  DF  WITH MEANS TO ADD TREATING MATERIAL {5}
209  DF  .~ Directly applied to separator {5}
220  DF  .~.~ Submerged fluid inlet {1}
221.1.~.~.~ With outlet at surface, e.g., froth flotation, etc. {1}
221.2  DF  .~.~.~.~> And gas injecting means other than by mechanical agitation

DEFINITION

Classification: 210/221.1

With outlet at surface, e.g., froth:

(under subclass 220) Apparatus in which there is a means to remove a lighter constituent.

SEE OR SEARCH CLASS

209, Classifying, Separating, and Assorting Solids,

162+, for flotation processes and apparatus for separating one solid component from another.