US PATENT SUBCLASS 210 / 489
.~.~.~ For series flow

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

348  DF  FILTER {25}
483  DF  .~ Supported, shaped or superimposed formed mediums {11}
488  DF  .~.~ Abutted or superimposed members {2}
489.~.~.~ For series flow {1}
490  DF  .~.~.~.~> Integral or coated layers {1}

DEFINITION

Classification: 210/489

(under subclass 488) Apparatus so arranged that the liquid passes through them in succession.

SEE OR SEARCH THIS CLASS, SUBCLASS:

335+, for plural distinct filters arranged for series flow.

SEE OR SEARCH CLASS

55, Gas Separation,

482, 485, and 486+ for layered or serially arranged gas filters.