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发明名称
METHOD OF PROTECTING BOTTOM TUYERES
摘要
申请公布号
SU662020(A3)
申请公布日期
1979.05.15
申请号
SU19772459655
申请日期
1977.03.16
申请人
KREZO-LUAR (FIRMA)
发明人
PER LERUA,FR
分类号
C21C5/28;C21C5/48;(IPC1-7):21C5/28
主分类号
C21C5/28
代理机构
代理人
主权项
地址
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