US PATENT SUBCLASS 454 / 329
.~.~ With air pump

Current as of: June, 1999
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454 /   HD   VENTILATION

254  DF  HAVING INLET AIRWAY {11}
284  DF  .~ Including specific air distributor (e.g., register, etc.) {14}
329.~.~ With air pump

DEFINITION

Classification: 454/329

With air pump:

(under subclass 284) Subject matter wherein the air admitting means includes an air moving apparatus for forcing the air into the ventilated space.

SEE OR SEARCH THIS CLASS, SUBCLASS:

269, for an inlet airway having an air pump and structure for mixing plural airstreams together.

272, for an independent vent sleeve in a ceiling, wall, or floor which includes an air pump.