US PATENT SUBCLASS 454 / 266
.~.~.~ Pivoted

Current as of: June, 1999
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454 /   HD   VENTILATION

254  DF  HAVING INLET AIRWAY {11}
261  DF  .~ Including structure for mixing plural air streams together {4}
265  DF  .~.~ With readily movable air regulating louver, damper, or cover {1}
266.~.~.~ Pivoted {1}
267  DF  .~.~.~.~> Plural {1}

DEFINITION

Classification: 454/266

Pivoted:

(under subclass 265) Subject matter wherein the shiftable slats, body, cap, or closure swing about a fixed axis region which is parallel to or within a major air engaging surface thereof.