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发明名称
摘要
申请公布号
JPS6447012(U)
申请公布日期
1989.03.23
申请号
JP19870141664U
申请日期
1987.09.18
申请人
发明人
分类号
H01F27/28;(IPC1-7):H01F27/28
主分类号
H01F27/28
代理机构
代理人
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地址
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