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发明名称
摘要
申请公布号
JPS6452216(U)
申请公布日期
1989.03.31
申请号
JP19870146399U
申请日期
1987.09.28
申请人
发明人
分类号
H01F27/12;H02B13/02;(IPC1-7):H01F27/12
主分类号
H01F27/12
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