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公开(公告)号：US2097005A
公开(公告)日：1937-10-26
申请号：US305035
申请日：1935-01-23
Applicant: WRENN PAPER COMPANY
Inventor： WATERS VINCENT F , JOSEPH HALLOWELL JOHN
IPC: B31F1/07
CPC classification number: B31F1/07 , B31F2201/0782 , B31F2201/0794
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