Title:
Method of forming cigarette filter
United States Patent 3128680
Inventors:
Schaaf Jr., Edward M.
Publication Date:
04/14/1964
Export Citation:
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Assignee:
PHILIP MORRIS INC
Primary Class:
493/45
Other Classes:
55/521, 493/41, 493/47
International Classes:
A24D3/02; A24D3/00
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US Patent References:
2992648Cigarette filters
2900989Cigarette filter tip
2801638Filter tip for tobacco products
2793572Apparatus for and method of making filters
2164702Method and apparatus for making cigarette mouthpieces