US PATENT SUBCLASS 131 / 220
.~.~.~ Bowl


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}
219  DF  .~.~ Lined or coated {1}
220.~.~.~ Bowl


DEFINITION

Classification: 131/220

(under subclass 219) Smoking devices in which the bowl is either lined or coated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

183, for bowl linings removable for ejection of charge.

196, and 197, where an inner bowl is provided spaced from the outer walls of the bowl.