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发明名称
LINE MAINTAINING DEVICE
摘要
申请公布号
JPH0435558(A)
申请公布日期
1992.02.06
申请号
JP19900142516
申请日期
1990.05.31
申请人
NEC CORP
发明人
MORI HISAYUKI
分类号
H04M3/12;H04M3/32
主分类号
H04M3/12
代理机构
代理人
主权项
地址
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