US PATENT SUBCLASS 454 / 345
.~.~ Having plural suction intakes

Current as of: June, 1999
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454 /   HD   VENTILATION

339  DF  HAVING OUTLET AIRWAY {7}
341  DF  .~ With air pump {9}
345.~.~ Having plural suction intakes

DEFINITION

Classification: 454/345

Having plural suction intakes:

(under subclass 341) Subject matter in which the air is withdrawn from multiple spaced apart locations within the ventilated space.

(1) Note. The plural suction intakes must be positively claimed for proper original patent placement in this subclass.