US PATENT SUBCLASS 454 / 104-- .~.~.~ Including unitary inlet and outlet housing

US PATENT SUBCLASS 454 / 104
.~.~.~ Including unitary inlet and outlet housing

Current as of: June, 1999
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454 /	HD	VENTILATION

69	DF	VEHICLE (E.G., AUTOMOBILE, ETC.) {15}
83	DF	.~ Railcar, bus, or trailer {10}
103	DF	.~.~ Having both inlet and outlet airways {2}
104		.~.~.~ Including unitary inlet and outlet housing

DEFINITION

Classification: 454/104

Including unitary inlet and outlet housing:

(under subclass 103) Subject matter comprising a single structure containing portions of the air admitting and air exhausting means.

(1) Note. This subclass is intended to include subject matter in which the air admitting and air exhausting means are integral.

SEE OR SEARCH THIS CLASS, SUBCLASS:

142, for other vehicles which have a unitary inlet and outlet housing.

234+, for static structures having forced recirculation and which use a unitary inlet and outlet housing.

241+, for static structures (e.g., buildings) which have a unitary inlet and outlet housing.