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发明名称
Improvements in or relating to Telecommunications Systems.
摘要
申请公布号
GB1176006(A)
申请公布日期
1970.01.01
申请号
GB19670011221
申请日期
1967.03.09
申请人
SIEMENS AKTIENGESELLSCHAFT
发明人
分类号
H04M15/36;H04Q3/42;H04Q5/02;H04Q5/24
主分类号
H04M15/36
代理机构
代理人
主权项
地址
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