US PATENT SUBCLASS 55 / 510
.~.~ Annular unit held between dished or plate-like end members for top and bottom support

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}
510.~.~ Annular unit held between dished or plate-like end members for top and bottom support

DEFINITION

Classification: 55/510

(under subclass 495) Apparatus in which a filter unit of annular form, e.g., a hollow cylinder or doughnut, is held between a pair of substantially solid members applied axially (i.e., across the open ends) of the unit whereby gas flow is through the filter and through an opening in at least one of said members.