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发明名称
EXCHANGE SYSTEM CAPABLE OF COLLECTING FAULT INFORMATION
摘要
申请公布号
JPH0832676(A)
申请公布日期
1996.02.02
申请号
JP19940160871
申请日期
1994.07.13
申请人
NEC CORP
发明人
TAGAWA KAZUHIRO
分类号
H04M3/08;H04M3/22;(IPC1-7):H04M3/22
主分类号
H04M3/08
代理机构
代理人
主权项
地址
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