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发明名称
Methods and apparatus for melting and casting metals in a vacuum
摘要
申请公布号
US2983973(A)
申请公布日期
1961.05.16
申请号
US19560629557
申请日期
1956.12.20
申请人
PARLANTI CONRAD A
发明人
PARLANTI CONRAD A.
分类号
B22D18/06;F27B5/04
主分类号
B22D18/06
代理机构
代理人
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