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发明名称
摘要
申请公布号
JPS6413830(U)
申请公布日期
1989.01.24
申请号
JP19870107874U
申请日期
1987.07.14
申请人
发明人
分类号
H04L27/04;(IPC1-7):H04L27/04
主分类号
H04L27/04
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