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经营范围
发明名称
(B C) ;KOMBINASJONSBOREKRONE
摘要
申请公布号
NO890327(A)
申请公布日期
1990.08.20
申请号
NO19890000327
申请日期
1989.01.26
申请人
TANDBERG, GEIR;ROEDLAND, ARILD
发明人
TANDBERG, GEIR
分类号
E21B10/04;E21B10/48;E21B10/56;E21B10/567;E21B10/60
主分类号
E21B10/04
代理机构
代理人
主权项
地址
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