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发明名称
LINE CONTINUITY CONFIRMATION TEST SYSTEM
摘要
申请公布号
JPH03240351(A)
申请公布日期
1991.10.25
申请号
JP19900037743
申请日期
1990.02.19
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
NONAKA AKIRA;YAJIMA TOSHIO;KOGURE KOJI;YAMAGUCHI TOMOHARU
分类号
H04M3/32
主分类号
H04M3/32
代理机构
代理人
主权项
地址
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