US PATENT SUBCLASS 131 / 203
.~.~.~.~.~ Absorber only (no filtering)

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}
202  DF  .~.~.~.~ Filter and/or absorber {3}
203.~.~.~.~.~ Absorber only (no filtering) {1}
204  DF  .~.~.~.~.~.~> Lined or coated bowls or stems

DEFINITION

Classification: 131/203

(under subclass 202) Smoke devices provided with an absorber which performs no filtering operation.

(1) Note. This subclass includes arrangements of smoke outlets to provide an absorbent layer of tobacco which will not be burned.

SEE OR SEARCH THIS CLASS, SUBCLASS:

207, where the absorbent materials is so arranged in the device as also to perform a filtering function.

230, for absorbent pipe bowl materials and compositions.