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公开(公告)号：US3512437A
公开(公告)日：1970-05-19
申请号：US3512437D
申请日：1967-06-22
Applicant: INT PAPER CO
Inventor： ENNEPER ARNOLD A , SPENCER HARVEY JAMES , WIERZBA ANTHONY R
CPC classification number: B26D1/56 , B26D7/12 , B26D2210/11 , Y10T83/313 , Y10T83/4778 , Y10T83/4789
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