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发明名称
摘要
申请公布号
JPS5720589(Y2)
申请公布日期
1982.05.04
申请号
JP19770134373U
申请日期
1977.10.07
申请人
发明人
分类号
C21C5/44;C21C5/48;(IPC1-7):C21C5/44
主分类号
C21C5/44
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代理人
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