US PATENT SUBCLASS 210 / 417
.~ Alternating oppositely opening liquid distributors

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

348  DF  FILTER {25}
417.~ Alternating oppositely opening liquid distributors

DEFINITION

Classification: 210/417

(under subclass 348) Apparatus in which there are liquid distributors embedded in a filter medium, alternate distributors acting respectively as liquid inlet and discharge means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

343, for similar devices in which the filter elements form plural units.