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发明名称
METHOD AND APPARATUS FOR INTRODUCING MATERIALS INTO AN OPEN HEARTH FURNACE
摘要
申请公布号
CA781402(A)
申请公布日期
1968.03.26
申请号
CAD781402
申请日期
申请人
UNITED STATES STEEL CORPORATION
发明人
JOHN W. MCGILL
分类号
主分类号
代理机构
代理人
主权项
地址
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