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发明名称
System for roasting ores
摘要
申请公布号
US2235311(A)
申请公布日期
1941.03.18
申请号
US19400328495
申请日期
1940.04.08
申请人
HAROLD BULLARD
发明人
BULLARD HAROLD
分类号
F27B5/02;F27B9/24
主分类号
F27B5/02
代理机构
代理人
主权项
地址
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