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发明名称
Improvements relating to automatic switches of the kind used in telephone systems
摘要
申请公布号
GB610289(A)
申请公布日期
1948.10.13
申请号
GB19460010620
申请日期
1946.04.05
申请人
SIEMENS BROTHERS & CO. LIMITED;ERNEST ALFRED BRYAN
发明人
分类号
H01H63/22
主分类号
H01H63/22
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代理人
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