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发明名称
IMPROVEMENTS IN OR RELATING TO TELECOMMUNICATIONS SYSTEMS
摘要
申请公布号
GB1262618(A)
申请公布日期
1972.02.02
申请号
GB19700020063
申请日期
1970.04.27
申请人
SIEMENS AKTIENGESELLSCHAFT
发明人
分类号
H04M11/06;H04Q3/54
主分类号
H04M11/06
代理机构
代理人
主权项
地址
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