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发明名称
Downhole tool
摘要
申请公布号
GB201216871(D0)
申请公布日期
2012.11.07
申请号
GB20120016871
申请日期
2012.09.21
申请人
CHURCHILL DRILLING TOOLS LIMITED
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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