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经营范围
发明名称
Foundry flask
摘要
申请公布号
US2223563(A)
申请公布日期
1940.12.03
申请号
US19380248668
申请日期
1938.12.31
申请人
HAZEL K. HINES
发明人
HINES JAMES F.
分类号
B22C21/10
主分类号
B22C21/10
代理机构
代理人
主权项
地址
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