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发明名称
摘要
申请公布号
JPS50139328(A)
申请公布日期
1975.11.07
申请号
JP19740046556
申请日期
1974.04.26
申请人
发明人
分类号
H01F27/245;H01F3/02
主分类号
H01F27/245
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代理人
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