US PATENT SUBCLASS 55 / 501
.~.~ With additional support means not positively engaged or joined to media (e.g., across face of filter)

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

490  DF  WITH MEANS SECURING OR RETAINING SEPARATING MEDIA {7}
495  DF  .~ Unit or cohesive sheet-like media in flow line or frame {12}
501.~.~ With additional support means not positively engaged or joined to media (e.g., across face of filter)

DEFINITION

Classification: 55/501

(under subclass 495) Apparatus having an auxiliary supporting or retaining means for the media which is (1) positioned within the frame and removable therefrom or (2) adjacent the media in the flow line and not directly secured thereto.

SEE OR SEARCH THIS CLASS, SUBCLASS:

516+, for massed or particulate material held between open

work.