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发明名称
Vacuum casting method of multiple ingot casting
摘要
申请公布号
US3305901(A)
申请公布日期
1967.02.28
申请号
US19630287416
申请日期
1963.06.12
申请人
GERO METALLURGICAL CORPORATION
发明人
GERO JOHN B.
分类号
B22D18/06;C21C7/10
主分类号
B22D18/06
代理机构
代理人
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