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经营范围
发明名称
Metallurgical furnace
摘要
申请公布号
US1769213(A)
申请公布日期
1930.07.01
申请号
US19220549974
申请日期
1922.04.06
申请人
OPEN HEARTH COMBUSTION COMPANY
发明人
JR. GEORGE L. DANFORTH,
分类号
F27B3/00
主分类号
F27B3/00
代理机构
代理人
主权项
地址
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