US PATENT SUBCLASS 454 / 281
.~.~.~.~ Having specific vane supporting means

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}
281.~.~.~.~ Having specific vane supporting means {1}
282  DF  .~.~.~.~.~> In between vane ends

DEFINITION

Classification: 454/281

Having specific vane supporting means:

(under subclass 277) Subject matter wherein particular significance is attributed to means for directly contacting and holding one of the slats in position.

(1) Note. Specific vane supporting means must be claimed for inclusion in this subclass. A mere "means for mounting a louver slat" is not sufficient for inclusion in this subclass.

(2) Note. A specific supporting means for attaching one slat to an adjacent slat is included in this subclass.