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发明名称
Improvements in or relating to means for potential selection in telecommunications circuits
摘要
申请公布号
GB753406(A)
申请公布日期
1956.07.25
申请号
GB19540017879
申请日期
1954.06.17
申请人
SIEMENS AND HALSKE AKTIENGELLSCHAFT
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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地址
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