Title:
Tobacco smoke filter element
United States Patent 3236244

Inventors:
Irby Jr., Richard M.
Harlow, Edward S.
Publication Date:
02/22/1966
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Assignee:
AMERICAN TOBACCO CO
Primary Class:
131/274
Other Classes:
131/342
International Classes:
A24B15/28; A24D3/04; A24D3/14; A24D3/16; A24B15/00; A24D3/00
Foreign References:
AT173262B
FR685864A