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发明名称
SCREW THREAD CONNECTION FOR PIN AND BOX PIPE JOINTS
摘要
申请公布号
GB1583038(A)
申请公布日期
1981.01.21
申请号
GB19770015082
申请日期
1977.04.12
申请人
HYDRIL CO
发明人
分类号
F16L15/00;E21B17/042;F16L15/04;(IPC1-7):F16L15/00
主分类号
F16L15/00
代理机构
代理人
主权项
地址
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