US PATENT SUBCLASS 210 / 335
.~.~ In series for prefilt flow

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}
335.~.~ In series for prefilt flow {3}
336  DF  .~.~.~> Tortuous path
337  DF  .~.~.~> Nested units {1}
339  DF  .~.~.~> Internal flange supporting filter element

DEFINITION

Classification: 210/335

(under subclass 323.1) Apparatus which are in series.

SEE OR SEARCH THIS CLASS, SUBCLASS:

252+, for serially connected distinct treating units.

300+, for alternate traps and filters in series.

314+, for spaced diverse filters.

489+, for abutted or superimposed members forming a single filter element, arranged for series flow through the members.