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发明名称
SECURE MESSAGING SYSTEMS
摘要
申请公布号
EP0281223(A3)
申请公布日期
1990.05.30
申请号
EP19880300365
申请日期
1988.01.18
申请人
HEWLETT-PACKARD COMPANY
发明人
MARSHALL, ALAN DAVID;PROUDLER, GRAEME JOHN;MITCHELL, CHRISTOPHER JOHN
分类号
H04L1/12;H04L1/00;H04L1/16;H04L1/18;H04L9/32;H04N7/24;(IPC1-7):H04L1/16
主分类号
H04L1/12
代理机构
代理人
主权项
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