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经营范围
发明名称
Automatic blanking completion tool
摘要
申请公布号
GB9815046(D0)
申请公布日期
1998.09.09
申请号
GB19980015046
申请日期
1998.07.10
申请人
PHOENIX PETROLEUM SERVICES LIMITED
发明人
分类号
E21B23/12;E21B34/00;E21B34/08;E21B43/12;E21B43/14
主分类号
E21B23/12
代理机构
代理人
主权项
地址
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