US PATENT SUBCLASS 454 / 53
.~.~ With outlet air treatment means

Current as of: June, 1999
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454 /   HD   VENTILATION

49  DF  WORKSTATION VENTILATOR (E.G., HOOD, OFFTAKE, ETC.) {5}
50  DF  .~ Spray booth {2}
53.~.~ With outlet air treatment means {1}
54  DF  .~.~.~> With means for liquid contact {1}

DEFINITION

Classification: 454/53

With outlet air treatment means:

(under subclass 50) Subject matter comprising means to change a characteristic of the air being exhausted from the task area.

(1) Note. For example, this subclass includes means for removing noxious spray particles such as paint from the air being exhausted.

SEE OR SEARCH CLASS

96, Gas Separation: Apparatus, appropriate subclasses for means for removing dust and other contaminants from air, per se.