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发明名称
Protective circuit for telephone transmission lines
摘要
申请公布号
CH625375(A5)
申请公布日期
1981.09.15
申请号
CH19770015264
申请日期
1977.12.13
申请人
SIEMENS AG
发明人
OTHMAR GROSSPITZ
分类号
H04M3/18;(IPC1-7):H04M3/18
主分类号
H04M3/18
代理机构
代理人
主权项
地址
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