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1.发明授权Method of winding thermoplastic resin sheeting into rolls and rolls obtained thereby 失效将热塑性树脂片材卷绕成由此获得的辊和辊的方法公开(公告)号：US3390762A
公开(公告)日：1968-07-02
申请号：US64005967
申请日：1967-05-22
Applicant: CANADIAN IND
Inventor： FRANCIS MERNIEKS
CPC classification number: B65H75/00 , B29C53/32 , B65H2301/414325 , B65H2701/5112 , Y10S242/918 , Y10T428/249965
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