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发明名称
Electromagnetic device
摘要
申请公布号
US2345151(A)
申请公布日期
1944.03.28
申请号
US19400339765
申请日期
1940.06.10
申请人
RAY WILLIAM R
发明人
RAY WILLIAM R.
分类号
H01H50/34
主分类号
H01H50/34
代理机构
代理人
主权项
地址
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