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发明名称
摘要
申请公布号
JPS573242(B1)
申请公布日期
1982.01.20
申请号
JP19710056263
申请日期
1971.07.27
申请人
发明人
分类号
H04L25/03;H04L27/06;(IPC1-7):H03D1/04;H04B3/04
主分类号
H04L25/03
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代理人
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