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


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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(under subclass 341) Subject matter in which the air is withdrawn from multiple spaced apart locations within the ventilated space.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