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发明名称
LOOPBACK TEST CONTROL SYSTEM FOR TRANSMISSION LINE
摘要
申请公布号
JPH0316456(A)
申请公布日期
1991.01.24
申请号
JP19890150769
申请日期
1989.06.14
申请人
NEC CORP
发明人
NAKAMURA YUZO
分类号
H04L1/24;H04L29/14
主分类号
H04L1/24
代理机构
代理人
主权项
地址
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