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经营范围
发明名称
Electronic Signalling Device for Connection to a Signal Transmission Line
摘要
申请公布号
GB2064268(A)
申请公布日期
1981.06.10
申请号
GB19790032108
申请日期
1979.09.17
申请人
PHILIPS NV
发明人
分类号
G11B27/30;H04M19/08;(IPC1-7):H04M1/60
主分类号
G11B27/30
代理机构
代理人
主权项
地址
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