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发明名称
Conjunto para conter vazamento de petróleo e processo para conter vazamento de petróleo em uma bomba para poços de petróleo
摘要
申请公布号
BR9504043(A)
申请公布日期
1997.10.14
申请号
BR1995PI04043
申请日期
1995.09.15
申请人
GRENKE EDWARD
发明人
EDWARD GRENKE
分类号
E21B43/12;(IPC1-7):E21B43/12
主分类号
E21B43/12
代理机构
代理人
主权项
地址
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