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发明名称
DYNAMOMETRISK MAALEINNRETNING FOR BOREROER.
摘要
申请公布号
NO910771(D0)
申请公布日期
1991.02.27
申请号
NO19910000771
申请日期
1991.02.27
申请人
ELF AQUITAINE
发明人
HENNEUSE HENRI
分类号
E21B47/00;E21B47/12;G08C19/00;(IPC1-7):E21B/
主分类号
E21B47/00
代理机构
代理人
主权项
地址
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