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发明名称
HYDRAULIC FLUID ACTUATOR WITH METAL TO METAL SEALS
摘要
申请公布号
EP0996826(B1)
申请公布日期
2003.04.09
申请号
EP19980934625
申请日期
1998.07.17
申请人
DRESSER INDUSTRIES INC.
发明人
DEATON, THOMAS, M.
分类号
E21B23/04;E21B34/10;F15B15/14;(IPC1-7):F15B15/14
主分类号
E21B23/04
代理机构
代理人
主权项
地址
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