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发明名称
摘要
申请公布号
JPS5247536(B1)
申请公布日期
1977.12.03
申请号
JP19710044372
申请日期
1971.06.18
申请人
发明人
分类号
H01F21/02;H01F29/08;(IPC1-7):H01F29/08
主分类号
H01F21/02
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