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公开(公告)号：US2947247A
公开(公告)日：1960-08-02
申请号：US59418456
申请日：1956-06-27
Applicant: ILLINOIS TOOL WORKS
Inventor： RAYBURN CHARLES C , SCHMIDT HERMAN A , KNUTSEN WALLACE N
CPC classification number: B41F15/0881 , H05K3/14
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