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发明名称
PRIVACY COMMUNICATION SYSTEM
摘要
申请公布号
JPS6212227(A)
申请公布日期
1987.01.21
申请号
JP19850150162
申请日期
1985.07.10
申请人
HITACHI LTD
发明人
YAGI HIROYUKI;TAKARAGI KAZUO;SASAKI RYOICHI
分类号
H04L9/00;H04L9/14
主分类号
H04L9/00
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代理人
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