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发明名称
摘要
申请公布号
DD102164(A5)
申请公布日期
1973.12.05
申请号
DD19720167322
申请日期
1972.12.06
申请人
发明人
分类号
C21C5/30;C21C5/34;(IPC1-7):C21C5/34
主分类号
C21C5/30
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代理人
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