US PATENT SUBCLASS 55 / 516
.~.~ Held between openwork

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

490  DF  WITH MEANS SECURING OR RETAINING SEPARATING MEDIA {7}
512  DF  .~ Discrete fibrous or particulate solids {4}
516.~.~ Held between openwork {3}
517  DF  .~.~.~> Between telescoped or nonplanar retainers
518  DF  .~.~.~> Between perforated plates
519  DF  .~.~.~> Between reticulated end closures

DEFINITION

Classification: 55/516

(under subclass 512) Apparatus comprising at least two members which serve to confine or retain the filter media therebetween said members permitting gas to flow

therethrough.

(1) Note. A "member" under this definition may be no more than a series of parallel wires.

SEE OR SEARCH THIS CLASS, SUBCLASS:

494, for a grid for bottom support only of a separating media.

515, for a foraminous receptacle for holding a particulate or fibrous massed filter media.