US PATENT SUBCLASS 55 / 318
.~ Plural stages in unitary casing

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

315  DF  PLURAL SERIAL BASICALLY DIVERSE SEPARATING MEDIA {3}
318.~ Plural stages in unitary casing {2}
319  DF  .~.~> Including expansion chamber
320  DF  .~.~> Deflector and fibrous, filamentary, particulate solids, or cohesive sheet filter type {6}

DEFINITION

Classification: 55/318

(under subclass 315) Apparatus comprising separators of different basic types arranged in a single housing or flow confining means.