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发明名称
Improvements in or relating to telecommunications exchange systems
摘要
申请公布号
GB1098894(A)
申请公布日期
1968.01.10
申请号
GB19660027808
申请日期
1966.06.22
申请人
SIEMENS AKTIENGESELLSCHAFT
发明人
分类号
H04L12/52
主分类号
H04L12/52
代理机构
代理人
主权项
地址
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