Method of and substance for treating tobacco smoke
United States Patent 2108860
Inventors:
Kauffman, Harold L.
Publication Date:
02/22/1938
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Assignee:
Paul, Bechtner
Primary Class:
Other Classes:
131/334, 131/205, 131/341, 131/230, 131/204, 502/80, 131/31
International Classes:
A24D3/16; A24D3/00