Tobacco smoke filter
United States Patent 3347247
US Patent References:
Tobacco smoke filtering elements
- - 2904050
Tobacco smoke filters
- - 3032445
Fibrous cigarette filter
- - 3101723
Smoke filter and smoking devices formed therewith
- - 3217715
Process for producing tobacco smoke filter elements from cellulose ester filaments containing polyethylene glycol
- - 3227791
Tobacco smoke filtering elements
- - 2904050
Tobacco smoke filters
- - 3032445
Fibrous cigarette filter
- - 3101723
Smoke filter and smoking devices formed therewith
- - 3217715
Process for producing tobacco smoke filter elements from cellulose ester filaments containing polyethylene glycol
- - 3227791
Inventors:
Lloyd, Wallace G.
Publication Date:
10/17/1967
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Export Citation:
Assignee:
PHILIP MORRIS INC
Primary Class:
Other Classes:
131/343
International Classes:
A24D3/16; A24D3/00