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发明名称
摘要
申请公布号
JPS4995421(U)
申请公布日期
1974.08.17
申请号
JP19720141622U
申请日期
1972.12.09
申请人
发明人
分类号
H01F27/40;(IPC1-7):H01F27/40
主分类号
H01F27/40
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代理人
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