US PATENT SUBCLASS 210 / 472
.~ Vented

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

348  DF  FILTER {25}
472.~ Vented

DEFINITION

Classification: 210/472

(under subclass 348) Apparatus, including means to vent the filter or filtrate receiver.

SEE OR SEARCH THIS CLASS, SUBCLASS:

120, for flow, fluid pressure or material level responsive vent control.

180, for vapor or gas removal in a treatment device with heating means.

436, for a vented filter within a flow line.