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发明名称
Convertible tubular scraper
摘要
申请公布号
AU2008202960(A1)
申请公布日期
2008.07.31
申请号
AU20080202960
申请日期
2008.07.03
申请人
BAKER HUGHES INCORPORATED
发明人
GREGORY L HERN;JAMES M MCNICOL
分类号
E21B37/02;E21B17/046;E21B17/06
主分类号
E21B37/02
代理机构
代理人
主权项
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