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发明名称
Permanent magnet
摘要
申请公布号
US2380560(A)
申请公布日期
1945.07.31
申请号
US19420446601
申请日期
1942.06.11
申请人
CONTROL INSTRUMENT COMPANY, INC.
发明人
URQUHART NOEL
分类号
H01F41/02
主分类号
H01F41/02
代理机构
代理人
主权项
地址
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