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发明名称
Electromagnetic system
摘要
申请公布号
US2329021(A)
申请公布日期
1943.09.07
申请号
US19420448201
申请日期
1942.06.24
申请人
JOHN WALSH PHILIP
发明人
WALSH PHILIP JOHN
分类号
H01F29/14
主分类号
H01F29/14
代理机构
代理人
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