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经营范围
发明名称
Continuous heating furnace
摘要
申请公布号
US2139067(A)
申请公布日期
1938.12.06
申请号
US19370125325
申请日期
1937.02.11
申请人
NATIONAL TUBE COMPANY
发明人
BOAX JOHN J.
分类号
F27B9/24
主分类号
F27B9/24
代理机构
代理人
主权项
地址
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