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发明名称
STOPFEN FÜR BOHRLOCHMESSUNGEN
摘要
申请公布号
DE69118395(D1)
申请公布日期
1996.05.02
申请号
DE19916018395
申请日期
1991.12.02
申请人
PHOENIX PETROLEUM SERVICES LTD., INVERURIE, SCHOTTLAND/SCOTLAND, GB
发明人
SCHNEIDER, JOHN, L. BEECH WOOD PLACE WEST HILL, ABERDEENSHIRE AB32 6YF, GB;BARCIA, HUGO, MIGUEL, ABERDEEN AB3 6SF, GB;ROBINSON, BRUCE, CHARLES, ABERDEEN AB1 6LR, GB
分类号
E21B23/14;E21B33/12;E21B33/129;E21B34/14;(IPC1-7):E21B23/00
主分类号
E21B23/14
代理机构
代理人
主权项
地址
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