US PATENT SUBCLASS 454 / 195
MEANS COMBINED WITH DOOR
Current as of: June, 1999
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DEFINITION
Classification: 454/195
MEANS COMBINED WITH DOOR:
(under the class definition) Subject matter comprising means to admit air to, exhaust air from, or circulate air about a (ventilated) space in combination with a moveable structure which closes off an entranceway to the space.
(1) Note. The entranceway must be for the passage of something other than mere air, for example, a human or good.
SEE OR SEARCH THIS CLASS, SUBCLASS:
95+, for entry-door ventilation structure in a railcar, bus, or trailer.
