US PATENT SUBCLASS 454 / 101
.~.~.~.~ Wind-operated fan
Current as of:
June, 1999
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454 /
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VENTILATION
69
DF
VEHICLE (E.G., AUTOMOBILE, ETC.)
{15}
83
DF
.~ Railcar, bus, or trailer {10}
99
DF
.~.~ Having forced recirculation {1}
100
DF
.~.~.~ Having forced recirulation means alone {2}
101
.~.~.~.~ Wind-operated fan
DEFINITION
Classification: 454/101
Wind-operated fan:
(under subclass 100) Subject matter comprising a device for adding energy to and moving the air, which device is driven by moving air.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15, for a wind-operated fan associated with chimney or stacktop structure.
106, for other railcar, bus, or trailer wind-operated fans associated with an inlet and outlet airway.
113, for other railcar, bus, or trailer wind-operated fans associated with an inlet airway only.
117, for a railcar, bus, or trailer having a wind-operated fan associated with an outlet airway.
240, for a wind-operated air pump associated with a building having both an inlet and an outlet airway.
