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发明名称
Improvements relating to electric selecting systems
摘要
申请公布号
GB626065(A)
申请公布日期
1949.07.08
申请号
GB19460022760
申请日期
1946.07.31
申请人
SIEMENS BROTHERS & CO. LIMITED;DAVID ADAM CHRISTIAN
发明人
分类号
H04Q3/42
主分类号
H04Q3/42
代理机构
代理人
主权项
地址
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