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发明名称
PERMANENT MAGNETS
摘要
申请公布号
IE21771(L)
申请公布日期
1955.10.20
申请号
IE19550000241
申请日期
1955.04.19
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
C04B35/64;H01F1/11;H01F1/36;H01F7/02;(IPC1-7):H01F1/11
主分类号
C04B35/64
代理机构
代理人
主权项
地址
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