US PATENT SUBCLASS 454 / 66
.~ Having inlet airway

Current as of: June, 1999
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454 /   HD   VENTILATION

49  DF  WORKSTATION VENTILATOR (E.G., HOOD, OFFTAKE, ETC.) {5}
66.~ Having inlet airway

DEFINITION

Classification: 454/66

Having inlet airway:

(under subclass 49) Subject matter comprising an inlet passage for admitting air to the task area.

(1) Note. Subject matter which merely recirculates air within the task area is not included in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

51+, for a spray booth having an air inlet separate from an access opening.

57+, for a covered workbench chamber having an air inlet separate from an access opening.