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发明名称
Verfahren zur Herstellung von Kernen fuer zu giessende Hohlbloecke
摘要
申请公布号
DE521653(C)
申请公布日期
1931.04.02
申请号
DE1929V026096D
申请日期
1929.12.10
申请人
VEREINIGTE STAHLWERKE AKT.-GES.
发明人
KUMPMANN EMIL
分类号
B22D7/04
主分类号
B22D7/04
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代理人
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