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发明名称
摘要
申请公布号
SU448233(A1)
申请公布日期
1974.10.30
申请号
SU19721831125
申请日期
1972.09.25
申请人
发明人
分类号
C21C7/00;(IPC1-7):C21C7/00
主分类号
C21C7/00
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代理人
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