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经营范围
发明名称
Roller reamer
摘要
申请公布号
GB9823798(D0)
申请公布日期
1998.12.23
申请号
GB19980023798
申请日期
1998.11.02
申请人
INTERNATIONAL PETROLEUM EQUIPMENT LIMITED
发明人
分类号
E21B10/30
主分类号
E21B10/30
代理机构
代理人
主权项
地址
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