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1.发明授权
公开(公告)号：US2684104A
公开(公告)日：1954-07-20
申请号：US20121850
申请日：1950-12-16
Applicant: DESSART BORS INC
Inventor： DESSART FRANKLYN M , CUMING JOHN G , BECKER RALPH W , WATKINS ROBERT B
IPC: B31D5/02
CPC classification number: B31D5/02 , Y10T156/1002
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