US PATENT SUBCLASS 131 / 336
.~.~ Air

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


131 /   HD   TOBACCO

331  DF  SMOKE SEPARATOR OR TREATER {9}
335  DF  .~ By adding constituent to smoke stream {2}
336.~.~ Air

DEFINITION

Classification: 131/336

Air:

(under subclass 335) Product or process wherein the constituent added is air.

SEE OR SEARCH THIS CLASS, SUBCLASS:

198.1+, for air inlets in a cigar holder, cigarette holder, or pipe.

272, for antismoking devices wherein the smoke to air ratio is controlled.