Web preconditioner
United States Patent 3218219

Inventors:
Sherman, Robert A.
Publication Date:
11/16/1965
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Assignee:
KOPPERS CO INC
Primary Class:
Other Classes:
425/369, 425/162, 242/418.100, 425/107, 226/44, 318/6
International Classes:
B31F1/28; B31F7/00; H02P7/34; B31F1/20; H02P7/18
US Patent References:
3032245Apparatus for controlling web tension
Foreign References:
GB261031A
IT283907B