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经营范围
发明名称
Safety pipe joint
摘要
申请公布号
US2508306(A)
申请公布日期
1950.05.16
申请号
US19450592180
申请日期
1945.05.05
申请人
HOUSTON OIL FIELD MATERIAL COMPANY, INC.
发明人
THURSTON FRANK M.;JUSTICE GEORGE E.
分类号
E21B17/06
主分类号
E21B17/06
代理机构
代理人
主权项
地址
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