US PATENT SUBCLASS 454 / 308
.~.~ Having vanes or elongated output slots extending radially

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}
308.~.~ Having vanes or elongated output slots extending radially

DEFINITION

Classification: 454/308

Having vanes or elongated output slots extending radially:

(under subclass 284) Subject matter wherein the air directing means comprises a plurality of slats, slat portions, or oblong airway openings which radiate away from a common center.

SEE OR SEARCH THIS CLASS, SUBCLASS:

274, for wall-type thimbles with sliding valves, many of which have radially extending output slots.