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经营范围
发明名称
Apparatus and method
摘要
申请公布号
GB0417328(D0)
申请公布日期
2004.09.08
申请号
GB20040017328
申请日期
2004.08.04
申请人
READ WELL SERVICES LIMITED
发明人
分类号
E21B;E21B33/12;E21B33/127
主分类号
E21B
代理机构
代理人
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