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经营范围
发明名称
Open-hearth furnace
摘要
申请公布号
US2415761(A)
申请公布日期
1947.02.11
申请号
US19420437435
申请日期
1942.04.02
申请人
RICHARDS EDWIN R
发明人
RICHARDS EDWIN R.
分类号
F27B3/24;F27D1/12;F27D9/00
主分类号
F27B3/24
代理机构
代理人
主权项
地址
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