US PATENT SUBCLASS 454 / 192
.~ Including current adjusting mean

Current as of: June, 1999
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454 /   HD   VENTILATION

188  DF  HAVING PROTECTING AIR CURRENT {5}
192.~ Including current adjusting mean

DEFINITION

Classification: 454/192

Including current adjusting means:

(under subclass 188) Subject matter comprising means for varying the direction, rate of flow, or character of the air jet or sheet.