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发明名称
ZENTRIERVORRICHTUNG FÜR ÖLFELDFUTTERROHR.
摘要
申请公布号
AT119234(T)
申请公布日期
1995.03.15
申请号
AT19910902218T
申请日期
1991.01.17
申请人
WEATHERFORD/LAMB, INC. (A DELAWARE CORPORATION)
发明人
GULLET, PAUL, DOUGLAS, MAXFIELD AXHOLM;WOOLSTHORPE-BY-COLSTERWORTH;JANSCH, MANFRED
分类号
E21B17/10;E21B23/00;E21B29/02;(IPC1-7):E21B17/10
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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