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发明名称
Cutting head provided with threading means
摘要
申请公布号
GB2440939(B)
申请公布日期
2009.08.05
申请号
GB20060007612
申请日期
2006.04.18
申请人
COMPAGNIE DU SOL
发明人
LEWIS STANSFIELD
分类号
E21B10/32;E02D5/34;E02D5/36;E21B10/44
主分类号
E21B10/32
代理机构
代理人
主权项
地址
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