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发明名称
Magnetic time-lag device
摘要
申请公布号
GB569211(A)
申请公布日期
1945.05.11
申请号
GB19430017973
申请日期
1943.10.30
申请人
ERNEST STUART RUSSELL
发明人
分类号
H01H71/34
主分类号
H01H71/34
代理机构
代理人
主权项
地址
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