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发明名称
摘要
申请公布号
JPS4980821(U)
申请公布日期
1974.07.12
申请号
JP19720126595U
申请日期
1972.11.01
申请人
发明人
分类号
H01F38/42;H01F19/00;H01F19/04;(IPC1-7):H01F19/04
主分类号
H01F38/42
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代理人
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