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经营范围
发明名称
Improvements in or relating to circuit arrangements for relay line-selectors in telecommunication installations
摘要
申请公布号
GB806826(A)
申请公布日期
1958.12.31
申请号
GB19570008892
申请日期
1957.03.18
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
分类号
H01H67/22;H04Q3/00
主分类号
H01H67/22
代理机构
代理人
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地址
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