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发明名称
TELEPHONE SUBSCRIBER LINE MONITORING
摘要
申请公布号
GB1511767(A)
申请公布日期
1978.05.24
申请号
GB19760043322
申请日期
1976.10.19
申请人
INT STANDARD ELECTRIC CORP
发明人
分类号
H04M3/22;H04M19/02;(IPC1-7):H04M3/06
主分类号
H04M3/22
代理机构
代理人
主权项
地址
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