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经营范围
发明名称
Improvements in and relating to foundry flasks
摘要
申请公布号
GB667599(A)
申请公布日期
1952.03.05
申请号
GB19500003183
申请日期
1950.02.07
申请人
SVEN NILSSON
发明人
分类号
B22C21/00
主分类号
B22C21/00
代理机构
代理人
主权项
地址
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