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公开(公告)号：US2704028A
公开(公告)日：1955-03-15
申请号：US29217552
申请日：1952-06-06
Applicant: DITTO INC
Inventor： BRUNS HERBERT F , GOLBECK BERNARD J
IPC: B41L29/00
CPC classification number: B41L29/00
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