US PATENT SUBCLASS 131 / 204
.~.~.~.~.~.~ Lined or coated bowls or stems

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  DF  .~.~.~.~.~ Absorber only (no filtering) {1}
204.~.~.~.~.~.~ Lined or coated bowls or stems

DEFINITION

Classification: 131/204

(under subclass 203) Smoking devices in which the absorbent material is in the form of a lining or a coating for either the bowl or the smoke passage in the stem.

SEE OR SEARCH THIS CLASS, SUBCLASS:

219, and 220, for other linings or coatings.