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发明名称
Drillable bridge plug
摘要
申请公布号
GB0412501(D0)
申请公布日期
2004.07.07
申请号
GB20040012501
申请日期
2001.06.28
申请人
BJ SERVICES COMPANY
发明人
分类号
E21B33/12;E21B33/129
主分类号
E21B33/12
代理机构
代理人
主权项
地址
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