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发明名称
IMPROVEMENTS IN OR RELATING TO TELECOMMUNICATIONS EXCHANGE SYSTEMS
摘要
申请公布号
GB1200281(A)
申请公布日期
1970.07.29
申请号
GB19680013907
申请日期
1968.03.22
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
主权项
地址
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