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发明名称
摘要
申请公布号
JPS5254754(Y2)
申请公布日期
1977.12.12
申请号
JP19710106092U
申请日期
1971.11.13
申请人
发明人
分类号
H01F7/04;H01F7/14;H01H71/24;H01H71/32;(IPC1-7):H01F7/14
主分类号
H01F7/04
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