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经营范围
发明名称
Threaded joint
摘要
申请公布号
US2140467(A)
申请公布日期
1938.12.13
申请号
US19370177591
申请日期
1937.12.01
申请人
THE GEORGE E. FAILING SUPPLY COMPANY
发明人
CARGILE CLIFTON
分类号
E21B17/042;F16L15/00;F16L15/08
主分类号
E21B17/042
代理机构
代理人
主权项
地址
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