US PATENT SUBCLASS 210 / 415
.~.~.~ Nontranslatory rotary

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}
413  DF  .~.~ Fixed filter medium and movable stirrer or cleaner {2}
415.~.~.~ Nontranslatory rotary

DEFINITION

Classification: 210/415

(under subclass 413) Apparatus in which the filter medium has a curved surface and in which the cleaning or agitating means moves about a fixed axis and has nontranslatory rotary motion.