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发明名称
TOOL FOR THE MEASUREMENT OF THE PRESSURE IN AN OIL WELL
摘要
申请公布号
EP0267096(B1)
申请公布日期
1991.01.30
申请号
EP19870402349
申请日期
1987.10.21
申请人
FLOPETROL SERVICES, INC.
发明人
CORJON, PATRICE
分类号
E21B23/00;E21B34/14;E21B47/06;E21B49/08
主分类号
E21B23/00
代理机构
代理人
主权项
地址
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