US PATENT SUBCLASS 131 / 237.5
.~.~.~ Split tube type

Current as of: June, 1999
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131 /   HD   TOBACCO

329  DF  TOBACCO USERS' APPLIANCE {8}
231  DF  .~ With ash receiver {6}
235.1  DF  .~.~ Extinguisher {3}
237.5.~.~.~ Split tube type

DEFINITION

Classification: 131/237.5

Split tube type:

(under subclass 235.1) Subject matter wherein the appliance in made from a plurality of individual arcuate segments which form a longitudinally divided conduit to help terminate the burning of the lighted tobacco article.