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发明名称
摘要
申请公布号
JPS5649986(B2)
申请公布日期
1981.11.26
申请号
JP19750022850
申请日期
1975.02.26
申请人
发明人
分类号
C22C19/03;H01F1/14;H01F1/147
主分类号
C22C19/03
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