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经营范围
发明名称
Tuyere
摘要
申请公布号
GB712429(A)
申请公布日期
1954.07.21
申请号
GB19510026644
申请日期
1951.11.14
申请人
UNITED STATES STEEL CORPORATION
发明人
分类号
C21B7/16
主分类号
C21B7/16
代理机构
代理人
主权项
地址
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