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公开(公告)号：US3049994A
公开(公告)日：1962-08-21
申请号：US84704659
申请日：1959-10-19
Applicant: DITTO INC
Inventor： RACZYNSKI WALTER A , THOMAS RICHARD E , UHL ALLEN E
CPC classification number: B41M5/04 , B41M5/0253
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