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发明名称
摘要
申请公布号
JPS474439(U)
申请公布日期
1972.09.11
申请号
JP19710005915U
申请日期
1971.02.06
申请人
发明人
分类号
H01F7/06;H01F7/16;(IPC1-7):H01F7/16
主分类号
H01F7/06
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代理人
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