US PATENT SUBCLASS 55 / 336
.~.~.~.~ Conical

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}
332  DF  .~.~.~ Cohesive sheet-like filter {4}
336.~.~.~.~ Conical

DEFINITION

Classification: 55/336

(under subclass 332) Apparatus in which the coherent sheet like filter means tapers towards or from a point.

(1) Note. There need not be an apex for the cone. The material may be in the form of a frusto cone.