US PATENT SUBCLASS 210 / 331
.~.~.~.~ Spaced filter wall type, e.g., multiple hollow leaves

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

322  DF  PLURAL DISTINCT SEPARATORS {1}
323.1  DF  .~ Filters {10}
324  DF  .~.~ Movable separating elements {6}
330  DF  .~.~.~ Connected for group operation {1}
331.~.~.~.~ Spaced filter wall type, e.g., multiple hollow leaves

DEFINITION

Classification: 210/331

(under subclass 330) Apparatus comprising spaced wall type filter elements, e.g., multiple hollow circular leaves.

SEE OR SEARCH THIS CLASS, SUBCLASS:

327, for alternating moving elements and cleaning means.

486+, for similar elements, per se.