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发明名称
摘要
申请公布号
JPS511446(Y1)
申请公布日期
1976.01.17
申请号
JP19750048245U
申请日期
1975.04.11
申请人
发明人
分类号
H01F30/00;H01F19/00;(IPC1-7):H01F19/00
主分类号
H01F30/00
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