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发明名称
SECURE DOCUMENT AND METHOD AND APPARATUS FOR PRODUCING AND AUTHENTICATING SAME.
摘要
申请公布号
EP0600646(A3)
申请公布日期
1997.11.05
申请号
EP19930309236
申请日期
1993.11.19
申请人
PITNEY BOWES INC.
发明人
BERSON, WILLIAM
分类号
G06K7/10;G07F7/12;G09C1/00;G09C5/00;H04L9/32;H04N1/44;(IPC1-7):G07F7/12;G07D7/00
主分类号
G06K7/10
代理机构
代理人
主权项
地址
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