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经营范围
发明名称
TELECOMUNICATIONS EXCHANGE SYSTEM SWITCHING NETWORKS
摘要
申请公布号
GB1519807(A)
申请公布日期
1978.08.02
申请号
GB19750041780
申请日期
1975.10.13
申请人
SIEMENS AG
发明人
分类号
H04Q3/52;H04Q11/04;(IPC1-7):H04Q11/04
主分类号
H04Q3/52
代理机构
代理人
主权项
地址
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