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公开(公告)号：US649659A
公开(公告)日：1900-05-15
申请号：US1899709954
申请日：1899-03-21
Applicant: DREISBACH CHARLES A , FUDGE RAYMOND E
Inventor： DREISBACH CHARLES A , FUDGE RAYMOND E
CPC classification number: G07F5/24
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