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发明名称
Function selection apparatus for a centrally controlled telephone exchange
摘要
申请公布号
GB2019697(A)
申请公布日期
1979.10.31
申请号
GB19790013874
申请日期
1979.04.20
申请人
SIEMENS AG
发明人
分类号
H04Q3/545;(IPC1-7):H04Q3/54
主分类号
H04Q3/545
代理机构
代理人
主权项
地址
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