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发明名称
Improvements in or relating to telecommunications exchange systems
摘要
申请公布号
GB1090370(A)
申请公布日期
1967.11.08
申请号
GB19660021008
申请日期
1966.05.12
申请人
SIEMENS AKTIENGESELLSCHAFT
发明人
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
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