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发明名称
摘要
申请公布号
JPS56134732(U)
申请公布日期
1981.10.13
申请号
JP19810030520U
申请日期
1981.03.05
申请人
发明人
分类号
H01F30/00;(IPC1-7):H01F31/00
主分类号
H01F30/00
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代理人
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