US PATENT SUBCLASS 55 / 323
.~.~.~.~ Filters

Current as of: June, 1999
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55 /   HD   GAS SEPARATION

315  DF  PLURAL SERIAL BASICALLY DIVERSE SEPARATING MEDIA {3}
318  DF  .~ Plural stages in unitary casing {2}
320  DF  .~.~ Deflector and fibrous, filamentary, particulate solids, or cohesive sheet filter type {6}
321  DF  .~.~.~ Multiple of one type in series of parallel in flow path {3}
323.~.~.~.~ Filters {1}
324  DF  .~.~.~.~.~> In parallel

DEFINITION

Classification: 55/323

(under subclass 321) Apparatus in which the multiple, similar separators are of the type which retain thereon or prevent passage therethrough of nongaseous particles.