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发明名称
POLARITY INVERSION DETECTION CIRCUIT FOR LINE
摘要
申请公布号
JPH0355943(A)
申请公布日期
1991.03.11
申请号
JP19890191720
申请日期
1989.07.24
申请人
NEC CORP
发明人
KISHIMOTO KAZUNORI
分类号
H04M1/00
主分类号
H04M1/00
代理机构
代理人
主权项
地址
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