REMOVING CONTAMINANTS FROM CIGARETTE SMOKE
United States Patent 3424168
US Patent References:
Tobacco smoke filter
- - 3251365


Inventors:
Lloyd, Roger V.
Publication Date:
01/28/1969
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Assignee:
PITTSBURGH ACTIVATED CARBON CO
Primary Class:
131/334
Other Classes:
131/342
International Classes:
A24D3/16; A24D3/00; A24D1/06
Foreign References:
CA650633A
GB682930A




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