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发明名称
Producing metallic ingots
摘要
申请公布号
US1850477(A)
申请公布日期
1932.03.22
申请号
US19310530033
申请日期
1931.04.14
申请人
ERNST ROTH
发明人
ROTH ERNST
分类号
B22D7/00
主分类号
B22D7/00
代理机构
代理人
主权项
地址
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