US PATENT SUBCLASS 210 / 350
.~ With movable means to compress medium

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

348  DF  FILTER {25}
350.~ With movable means to compress medium {2}
351  DF  .~.~> Actuating means external of closed casing
352  DF  .~.~> Internal spring

DEFINITION

Classification: 210/350

(under subclass 348) Apparatus in which a filter medium is enclosed by a receptacle and provided with adjustable or movable means to compress the filtering material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

226, for a sectional pressure type filter and porous filler.