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发明名称
Pipe protector
摘要
申请公布号
AU5450298(A)
申请公布日期
1998.06.22
申请号
AU19980054502
申请日期
1997.11.21
申请人
PEGASUS DIRECTIONAL DRILLING L.L.P.
发明人
GUNTHER VON GYNZ-REKOWSKI
分类号
E21B17/10
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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