Title:
Additive-releasing filter for releasing additives into tobacco smoke
United States Patent 3280823
US Patent References:
Recovery of nicotine
- - 2293954

Filter for tobacco smoke
- - 2739598

Smoke filter
- - 2754829

Filter for tobacco smoke
- - 2839065

Smoking composition
- - 3047431


Inventors:
Abraham, Bavley
Robb II, Ernest W.
Publication Date:
10/25/1966
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Assignee:
PHILIP MORRIS INC
Primary Class:
131/334
Other Classes:
131/200, 131/336
International Classes:
A24D3/12; A24D3/00
US Patent References:
3109436Tobacco products
Foreign References:
AT173262B