.~.~ Propeller fan having rotary axis perpendicular to window {2}
209
.~.~.~ With mounting means for pump reversal
DEFINITION
Classification: 454/209
With mounting means for pump reversal:
(under subclass 208) Subject matter comprising means for holding or uniting the air moving apparatus to the window and wherein the holding means permits selectively facing of the air moving apparatus in either of two opposing directions.
(1) Note. The opposing directions are usually to allow the fan to selectively introduce air to or exhaust air from the ventilated space.
(2) Note. A mounting means which must be reversed with the air pump to face the pump in an opposite direction is not included in this subclass.
