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发明名称
摘要
申请公布号
FR2442275(B1)
申请公布日期
1984.10.19
申请号
FR19790028842
申请日期
1979.11.22
申请人
NIPPON STEEL CORP
发明人
分类号
C22B1/16;C22B1/20;(IPC1-7):C22B1/20
主分类号
C22B1/16
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代理人
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