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发明名称
摘要
申请公布号
JPS4912815(B1)
申请公布日期
1974.03.27
申请号
JP19700101480
申请日期
1970.11.19
申请人
发明人
分类号
C22C1/04;C22C19/07;H01F1/053
主分类号
C22C1/04
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代理人
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