Adjustable cigarette filters
United States Patent 3376874
US Patent References:
Smoking implement
- - 2124130

Filter unit for pipes
- - 2843133

Cigarettes
- - 2954035


Inventors:
Yunil, Kim
Namsik, Kim
Yongsik, Kim
Jeonsik, Kim
Publication Date:
04/09/1968
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Primary Class:
131/207
Other Classes:
131/338
International Classes:
A24D3/04; A24D3/00