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发明名称
摘要
申请公布号
CS174545(B1)
申请公布日期
1977.04.29
申请号
CS19740007961
申请日期
1974.11.21
申请人
发明人
分类号
C21C1/00;(IPC1-7):C21C1/00
主分类号
C21C1/00
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代理人
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地址
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