US PATENT SUBCLASS 454 / 301
.~.~.~ Including elongated output slot

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}
292  DF  .~.~ Ceiling type {4}
301.~.~.~ Including elongated output slot {2}
302  DF  .~.~.~.~> Single, annular output slot
303  DF  .~.~.~.~> Having portion or element movable during normal use {1}

DEFINITION

Classification: 454/301

Including elongated output slot:

(under subclass 292) Subject matter wherein the air directing means includes or forms an oblong airway opening for admitting the air into the chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

296+, for a ceiling-type air distributor often having elongated perforation or porous openings.

299+, for a ceiling-type air distributor having elongated slots formed between plural vanes.