US PATENT SUBCLASS 422 / 296
.~.~.~ Fluid pressure maintains closure or seal

Current as of: June, 1999
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422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

243  DF  PHYSICAL TYPE APPARATUS {8}
292  DF  .~ Apparatus for treating solid article or material with fluid chemical {4}
295  DF  .~.~ Including pressure treating chamber (above ambient) {3}
296.~.~.~ Fluid pressure maintains closure or seal

DEFINITION

Classification: 422/296

Fluid pressure maintains closure or seal:

(under subclass 295) Apparatus wherein fluid pressure is used to close or seal the apparatus against the positive pressure therein.