US PATENT SUBCLASS 422 / 267
.~.~.~ Including means to remove solids from a filter

Current as of: June, 1999
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422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

243  DF  PHYSICAL TYPE APPARATUS {8}
255  DF  .~ Means separating or dissolving a material constituent {3}
261  DF  .~.~ Liquid-solid contact means {17}
267.~.~.~ Including means to remove solids from a filter

DEFINITION

Classification: 422/267

Including means to remove solids from a filter:

(under subclass 261) Apparatus having means for removing solids from a filter.

SEE OR SEARCH CLASS

210, Liquid Purification, or Separation,

396, for scraper for cleaning a filter.