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United States Patent 3543756
Inventors:
Murphy, James A.
Lee, Charles A.
Publication Date:
12/01/1970
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Download PDF 3543756
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Assignee:
INT PAPER CO
Primary Class:
604/374
Other Classes:
604/384, 604/375
International Classes:
A61F13/15
;
A61F13/20
; A61F13/16
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