US PATENT SUBCLASS 55 / 417
.~ Valve

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

410  DF  WITH SEPARATED GAS OUTFLOW CONTROL (E.G., APERTURED CONDUIT) {4}
417.~ Valve

DEFINITION

Classification: 55/417

(under subclass 410) Apparatus having a valve to vary gas flow to control the quantity of separated gas flowing through or out of the apparatus.