US PATENT SUBCLASS 131 / 211
.~.~.~.~ Chamber enclosed tubes or nipples

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}
200  DF  .~.~ Smoke treating {1}
201  DF  .~.~.~ Material separator and trap {7}
211.~.~.~.~ Chamber enclosed tubes or nipples {1}
212.1  DF  .~.~.~.~.~> Smoke direction changing {1}

DEFINITION

Classification: 131/211

(under subclass 201) Smoking devices in which the trap chamber has extended into it at least one tube or nipple forming a continuation of the smoke passage.

SEE OR SEARCH THIS CLASS, SUBCLASS:

339, for cigars or cigarettes having interior surfaces (e.g., baffles) predetermining smoke streak flow characteristics.