US PATENT SUBCLASS 210 / 339
.~.~.~ Internal flange supporting filter element

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  DF  .~.~ In series for prefilt flow {3}
339.~.~.~ Internal flange supporting filter element

DEFINITION

Classification: 210/339

(under subclass 335) Apparatus comprising a frame or casing having inwardly extending flanges or protuberances supporting the filter elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:

451+, for a filter element supported within a casing by an internal fixed shoulder.