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经营范围
发明名称
CRYPTOGRAPHIC COMMUNICATION SYSTEM
摘要
申请公布号
JPH0414337(A)
申请公布日期
1992.01.20
申请号
JP19900116939
申请日期
1990.05.08
申请人
HITACHI SHONAN DENSHI CO LTD
发明人
ICHIKAWA HIROTERU
分类号
H04K1/00
主分类号
H04K1/00
代理机构
代理人
主权项
地址
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