US PATENT SUBCLASS 454 / 289
.~.~ Floor type

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}
289.~.~ Floor type {2}
290  DF  .~.~.~> Having adjustable valve
291  DF  .~.~.~> With means for liquid contact

DEFINITION

Classification: 454/289

Floor type:

(under subclass 284) Subject matter wherein the air directing means is located on or in an interior, bottom structural barrier of the ventilated space (i.e., floor).

(1) Note. This and indented subclasses do not include a floor-type air distributor having a hood above the floor for directing the air laterally.

SEE OR SEARCH THIS CLASS, SUBCLASS:

287+, for a floor-type air distributor having a hood above the floor for directing the air laterally.