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经营范围
发明名称
A drill pipe
摘要
申请公布号
AU725911(B2)
申请公布日期
2000.10.26
申请号
AU19970040227
申请日期
1997.08.20
申请人
SCHOELLER BLECKMANN OILFIELD EQUIPMENT LIMITED
发明人
WILLIAM RUSSELL SCOTT AITKEN
分类号
E21B17/10;E21B17/22;(IPC1-7):E21B17/22
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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