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发明名称
摘要
申请公布号
JPS5746257(B2)
申请公布日期
1982.10.02
申请号
JP19720115613
申请日期
1972.11.20
申请人
发明人
分类号
H04L1/00;H04B1/74;H04B3/10;H04B17/00;H04L1/22;H04L25/02;H04L29/14
主分类号
H04L1/00
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