US PATENT SUBCLASS 55 / 286
.~.~ With gas flow arresting means

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

282  DF  WITH NONLIQUID CLEANING MEANS FOR SEPARATING MEDIA {13}
284  DF  .~ With sequential cleaning of plural units {2}
286.~.~ With gas flow arresting means {1}
287  DF  .~.~.~> Interconnected with cleaning means

DEFINITION

Classification: 55/286

(under subclass 284) Apparatus having means to prevent flow of system fluid through selected ones of the media.