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发明名称
Asymmetrisk vektrör for boring av oljebrönner
摘要
申请公布号
NO984116(D0)
申请公布日期
1998.09.07
申请号
NO19980004116
申请日期
1998.09.07
申请人
ELF EXPLORATION PRODUCTION
发明人
SANCHO, JEAN;GUERIN, JEAN-CLAUDE
分类号
E21B17/16;(IPC1-7):E21B
主分类号
E21B17/16
代理机构
代理人
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地址
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