US PATENT SUBCLASS 131 / 338
.~ Having means to vary smoke flow rate

Current as of: June, 1999
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131 /   HD   TOBACCO

331  DF  SMOKE SEPARATOR OR TREATER {9}
338.~ Having means to vary smoke flow rate

DEFINITION

Classification: 131/338

Having means to vary smoke flow rate:

(under subclass 331) Product or process having means to cause variations in the smoke stream velocity.