Title:
Smoke filters
United States Patent 3396061

Inventors:
Browne, Colin L.
Publication Date:
08/06/1968
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Assignee:
CELANESE CORP
Primary Class:
156/178
Other Classes:
156/436
International Classes:
A24D3/02; A24D3/00
US Patent References:
3128680Method of forming cigarette filter
3161557Apparatus for making an endless filter string for cigarette filter plugs
3205107Process for making filament tobacco smoke filters
3323961Method and apparatus for forming rodshaped fibrous elements