US PATENT SUBCLASS 210 / 619
.~.~.~ Rotating contactor

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

600  DF  PROCESSES {14}
601  DF  .~ Treatment by living organism {13}
615  DF  .~.~ Utilizing contact surfaces supporting microorganism (e.g., trickling filter, etc.) {2}
619.~.~.~ Rotating contactor

DEFINITION

Classification: 210/619

Rotating contactor:

(under subclass 615) Process wherein the contact surfaces are rotating contactors such as discs, drums, cylinders, brushes, etc.