US PATENT SUBCLASS 210 / 408
.~.~ Diverse, e.g., combined agitators, scrapers, aeration blowback

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

348  DF  FILTER {25}
407  DF  .~ With residue removing means or agitation of liquid {3}
408.~.~ Diverse, e.g., combined agitators, scrapers, aeration blowback

DEFINITION

Classification: 210/408

(under subclass 407) Apparatus provided with diverse residue removal or agitating means, e.g., agitators, scrapers, brushes, means to add a gas, means to blowback through the filter medium.

SEE OR SEARCH CLASS

209, Classifying, Separating, and Assorting Solids,

379+, for sifting screen cleaners.