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公开(公告)号：US2638845A
公开(公告)日：1953-05-19
申请号：US1589648
申请日：1948-03-19
Applicant: ST REGIS PAPER CO
Inventor： PERKINS RAE C
CPC classification number: B41C3/04 , B29K2021/00 , Y10S425/811
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