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发明名称
COMMUNICATION SYSTEM
摘要
申请公布号
JPH01105631(A)
申请公布日期
1989.04.24
申请号
JP19870261803
申请日期
1987.10.19
申请人
HITACHI LTD
发明人
TAKAI ATSUSHI;TAKASE MASAHIKO
分类号
H04L9/32;H04L9/00
主分类号
H04L9/32
代理机构
代理人
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地址
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