Filters

Details Filters Filters

1981-06-03

1983-06-21

Millin, V.

Tobacco

Smoke separator or treater

Interior surface causes particular flow characteristic

131340, 131341, 131344, A24D 304

Patent

active

043889344

ABSTRACT:
The filter comprises a tobacco smoke filtration tube ensheathed in a layer of smoke pervious thermoplastic material. The layer is encased in a plugwrap. The layer has a transverse cross-section rendered impervious to smoke tobacco by use of an annular sealing groove. The tube is closed at a location spaced longitudinally from the groove by a V-shaped annular groove.

REFERENCES:
patent: 3685523 (1972-08-01), Labbe

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