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经营范围
发明名称
LINE QUALITY MONITORING SYSTEM
摘要
申请公布号
JPH0537486(A)
申请公布日期
1993.02.12
申请号
JP19910187974
申请日期
1991.07.29
申请人
NEC CORP;NEC MIYAGI LTD
发明人
YOSHIYAMA SHUNJI;MAKINO JUN
分类号
H04J3/07;H04J3/14;H04L29/14
主分类号
H04J3/07
代理机构
代理人
主权项
地址
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