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经营范围
发明名称
Internally rotating nozzle for facilitating drilling through a subterranean formation
摘要
申请公布号
AU2012200223(A1)
申请公布日期
2012.02.02
申请号
AU20120200223
申请日期
2012.01.13
申请人
BELEW, DAVID
发明人
BELEW, DAVID;BELEW, BARRY
分类号
E21B43/114
主分类号
E21B43/114
代理机构
代理人
主权项
地址
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