US PATENT SUBCLASS 131 / 272
.~ Smoke to air ratio controlled

Current as of: June, 1999
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131 /   HD   TOBACCO

270  DF  ANTISMOKING PRODUCT OR DEVICE, I.E., DETERENT {3}
272.~ Smoke to air ratio controlled

DEFINITION

Classification: 131/272

Smoke to air ratio controlled:

(under subclass 270) Device or product wherein the air component of the smoke-air mixture reaching the user, is gradually increased in order to reduce the amount of smoke inhaled.

SEE OR SEARCH THIS CLASS, SUBCLASS:

198.1+, for a smoker's appliance having controlled air inlets.

331, for smoke separation and treating.