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经营范围
发明名称
DOUBLE ACTING HYDRAULIC JAR
摘要
申请公布号
EP0927296(A2)
申请公布日期
1999.07.07
申请号
EP19970919166
申请日期
1997.09.18
申请人
INTERNATIONAL PETROLEUM EQUIPMENT LIMITED
发明人
FRIIS, NIELS, CHRISTIAN, OLAF
分类号
E21B31/113;(IPC1-7):E21B31/113
主分类号
E21B31/113
代理机构
代理人
主权项
地址
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