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发明名称
VERKTOEY FOR TESTING AV EN BORESTRENG.
摘要
申请公布号
NO913810(D0)
申请公布日期
1991.09.27
申请号
NO19910003810
申请日期
1991.09.27
申请人
EXPLORATION & PROD SERV
发明人
EDWARDS JEFFREY CHARLES;JOHNS RAY;BUCHANAN ROBERT DONALD
分类号
E21B34/10;(IPC1-7):E21B/
主分类号
E21B34/10
代理机构
代理人
主权项
地址
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