US PATENT SUBCLASS 454 / 107
.~.~ Having inlet airway

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}
107.~.~ Having inlet airway {4}
108  DF  .~.~.~> Including specific air distributor {1}
110  DF  .~.~.~> Liquid contact
111  DF  .~.~.~> With deflecting separator-type filter
112  DF  .~.~.~> With air pump {2}

DEFINITION

Classification: 454/107

Having inlet airway:

(under subclass 83) Subject matter comprising means for

admitting air to the ventilated space.

(1) Note. Subject matter disclosing an airway which can function either as an inlet or an outlet is classified in this and indented subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

10+, for chimneys or stacks having inlet airways.

143+, for other vehicles having inlet airways.

254+, for static structures (e.g., buildings) having inlet airways.