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发明名称
Improvement in metal-casting art
摘要
申请公布号
GB709749(A)
申请公布日期
1954.06.02
申请号
GB19510020593
申请日期
1951.08.31
申请人
JAMES ALBERT HATCH
发明人
分类号
B22C9/02
主分类号
B22C9/02
代理机构
代理人
主权项
地址
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