US PATENT SUBCLASS 210 / 279
.~.~.~ With embedded fluid distributor

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}
269  DF  .~ With rehabilitation means {6}
275  DF  .~.~ Backwash or blowback means {3}
279.~.~.~ With embedded fluid distributor

DEFINITION

Classification: 210/279

(under subclass 275) Apparatus having a stationary fluid distributor extending into the bed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

289, and 291+, for another particulate bed and a fluid distributor.