US PATENT SUBCLASS 454 / 208
.~.~ Propeller fan having rotary axis perpendicular to window

Current as of: June, 1999
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454 /   HD   VENTILATION

196  DF  MEANS COMBINED WITH WINDOW {12}
200  DF  .~ With air pump {5}
208.~.~ Propeller fan having rotary axis perpendicular to window {2}
209  DF  .~.~.~> With mounting means for pump reversal
210  DF  .~.~.~> With extensible side panel

DEFINITION

Classification: 454/208

Propeller fan having rotary axis perpendicular to window:

(under subclass 200) Subject matter comprising an air moving element which rotates about an axis lying at right angles to a plane which generally defines the window.