US PATENT SUBCLASS 454 / 111
.~.~.~ With deflecting separator-type filter

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  DF  .~.~ Having inlet airway {4}
111.~.~.~ With deflecting separator-type filter

DEFINITION

Classification: 454/111

With deflecting separator-type filter:

(under subclass 107) Subject matter comprising means for separating particles from the air by use of properties of momentum.