US PATENT SUBCLASS 210 / 287
.~ Within flow line or flow line connected closed casing

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

263  DF  PARTICULATE MATERIAL TYPE SEPARATOR, E.G., ION EXCHANGE OR SAND BED {13}
287.~ Within flow line or flow line connected closed casing {2}
288  DF  .~.~> Conduit through bed, inlet and outlet at same end of casing
289  DF  .~.~> With particular liquid receiving means or foraminous bed retainer

DEFINITION

Classification: 210/287

(under subclass 263) Apparatus wherein the separatory material is confined within a container which is imperforate except for fluid conduit openings or access openings closed in normal operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

435+, for fixed filter mediums within a flow line connected closed casing.