US PATENT SUBCLASS 454 / 278
.~.~.~.~ Having moveable vanes

Current as of: June, 1999
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454 /   HD   VENTILATION

254  DF  HAVING INLET AIRWAY {11}
275  DF  .~ Including specific cover or shield for exterior vent opening {1}
276  DF  .~.~ Wall type {1}
277  DF  .~.~.~ Louver {5}
278.~.~.~.~ Having moveable vanes

DEFINITION

Classification: 454/278

Having moveable vanes:

(under subclass 277) Subject matter comprising means for relocating the slats or slat portions either (1) individually or (2) simultaneously or (3) as a unit along with supporting structure therefore.

(1) Note. A means for relocating the slats or slat portions which merely involves permanently deforming the slats is not included in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

313+, for an air distributor having a moveable louver.