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经营范围
发明名称
FLEXIBLE DRILL PIPE CONSTRUCTION
摘要
申请公布号
GB1497353(A)
申请公布日期
1978.01.12
申请号
GB19750015043
申请日期
1975.04.11
申请人
TAURUS GUMIIPARI VALLALAT
发明人
分类号
E21B17/20;F16L11/08;(IPC1-7):E21B17/00
主分类号
E21B17/20
代理机构
代理人
主权项
地址
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