SELECTIVE FILTER MEDIUM
United States Patent 3429318

Inventors:
Walker, Theodore R.
Miller, Edward G.
Publication Date:
02/25/1969
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Assignee:
EASTMAN KODAK CO
Primary Class:
131/343
Other Classes:
131/334, 131/331
International Classes:
A24D3/14; A24D3/00; B01D27/00; A24F7/04
US Patent References:
3332427Product and process for filtering tobacco smoke
3340879Cigarette filters




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