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发明名称
Convertible casing scraper
摘要
申请公布号
GB0305726(D0)
申请公布日期
2003.04.16
申请号
GB20030005726
申请日期
2003.03.13
申请人
BAKER HUGHES INCORPORATED
发明人
分类号
E21B17/046;E21B17/06;E21B37/02
主分类号
E21B17/046
代理机构
代理人
主权项
地址
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