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发明名称
摘要
申请公布号
JPS4996238(A)
申请公布日期
1974.09.12
申请号
JP19730008604
申请日期
1973.01.22
申请人
发明人
分类号
H01F27/28;H01F30/14;H02M5/12
主分类号
H01F27/28
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代理人
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地址
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