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公开(公告)号：US3090717A
公开(公告)日：1963-05-21
申请号：US738460
申请日：1960-02-08
Applicant: DITTO INC
Inventor： RACZYNSKI WALTER A , LEVEN MARTIN R , VOSS JR CHARLES J
IPC: B32B27/00
CPC classification number: B32B27/00
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