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经营范围
发明名称
LINE FAULT MONITORING SYSTEM
摘要
申请公布号
JPH02244956(A)
申请公布日期
1990.09.28
申请号
JP19890065323
申请日期
1989.03.17
申请人
NEC CORP
发明人
KASHIMA TETSUSHIGE
分类号
H04M3/22;H04Q11/04
主分类号
H04M3/22
代理机构
代理人
主权项
地址
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