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发明名称
Vorrichtung zum Einblasen von Gasen in Metallschmelzen,Verfahren zu ihrer Herstellung und ihre Verwendung
摘要
申请公布号
DE2057568(A1)
申请公布日期
1971.05.27
申请号
DE19702057568
申请日期
1970.11.23
申请人
KIEFFER,RICHARD,PROF.DR.;OBST,KARL-HEINZ,DR.
发明人
KIEFFER,RICHARD,PROF.DR.;OBST,KARL-HEINZ,DR.
分类号
C21C5/46;C21C7/06;C21C7/072
主分类号
C21C5/46
代理机构
代理人
主权项
地址
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