US PATENT SUBCLASS 131 / 207
.~.~.~.~.~ Absorbent or particulate

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}
207.~.~.~.~.~ Absorbent or particulate

DEFINITION

Classification: 131/207

(under subclass 202) Smoking devices in which a filter made of absorbent material or made of granular or other finely divided material is provided.

SEE OR SEARCH THIS CLASS, SUBCLASS:

203, and 204, where the absorbent material is not arranged in the smoking device to perform a filtering function but is so arranged as to provide an absorbing function only.

205, and 206, for absorbent tobacco supports.