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公开(公告)号：US2766906A
公开(公告)日：1956-10-16
申请号：US25128851
申请日：1951-10-15
Applicant: VENDO CO
Inventor： BOOKOUT FLOYD V , SHONTZ JR L ALLAN , ANDREWS BOLEY A
IPC: G07F11/30
CPC classification number: G07F11/30 , Y10T74/20636
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