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发明名称
Method of and apparatus for forming sectional cores
摘要
申请公布号
US1769141(A)
申请公布日期
1930.07.01
申请号
US19260114092
申请日期
1926.06.07
申请人
THE WANNER MALLEABLE CASTINGS COMPANY
发明人
KEEN LOUIS E.
分类号
B22C13/12
主分类号
B22C13/12
代理机构
代理人
主权项
地址
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