US PATENT SUBCLASS 131 / 198.1
.~.~ Supplemental or substitute air inlet

Current as of: June, 1999
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131 /   HD   TOBACCO

329  DF  TOBACCO USERS' APPLIANCE {8}
330  DF  .~ Device used for smoking {21}
198.1.~.~ Supplemental or substitute air inlet {1}
198.2  DF  .~.~.~> Adjustable air inlet type

DEFINITION

Classification: 131/198.1

Supplemental or substitute air inlet:

(under subclass 330) Subject matter provided with an air intake passageway in addition to, or in place of, the opening through which tobacco is inserted into the smoking device.

(1) Note. The air may be admitted to the burning tobacco or to the smoke conducting passages only.

SEE OR SEARCH THIS CLASS, SUBCLASS:

176, for pipe covers with air inlets.

191, and 193, for a smoking device having a smoking tube or burning tobacco from the bottom upwardly.