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发明名称
TRANSMISSION LINE TEST SYSTEM FOR LOOP COMMUNICATION SYSTEM
摘要
申请公布号
JPH03201750(A)
申请公布日期
1991.09.03
申请号
JP19890339736
申请日期
1989.12.28
申请人
TOSHIBA CORP;NIPPON TELEGR & TELEPH CORP <NTT>
发明人
YOSHIDA SHINICHIRO;IWASAKI KAZUNORI
分类号
H04L12/42
主分类号
H04L12/42
代理机构
代理人
主权项
地址
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