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发明名称
摘要
申请公布号
JPS4899443(U)
申请公布日期
1973.11.24
申请号
JP19720023859U
申请日期
1972.02.26
申请人
发明人
分类号
H01F7/06;H01F5/00;(IPC1-7):H01F5/00
主分类号
H01F7/06
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