Title:
Apparatus for the manufacture of filters composed of cellulose acetate
United States Patent 2794480

Inventors:
Crawford, Robert T.
Stevens, Joel B.
Publication Date:
06/04/1957
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Assignee:
EASTMAN KODAK CO
Primary Class:
Other Classes:
156/510, 210/508, 210/496, 131/361
International Classes:
A24D3/02; A24D3/14; B01D39/18; A24D3/00
US Patent References:
2399258Novel filamentous product and method of making it
2422234Method and apparatus for producing tubular fabric
2476582Method of making filter units
2574221Method of forming a multilayered mat of intercrossed filaments
2644780Method of forming fluffed filamentary masses and article produced thereby