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发明名称
Apparatus for charging aluminum producing furnaces
摘要
申请公布号
US1837070(A)
申请公布日期
1931.12.15
申请号
US19290417236
申请日期
1929.12.28
申请人
ERNST ROTH
发明人
ROTH ERNST
分类号
C25C3/14;F27D3/18
主分类号
C25C3/14
代理机构
代理人
主权项
地址
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