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经营范围
发明名称
Brönnbarriere
摘要
申请公布号
NO950396(A)
申请公布日期
1996.08.05
申请号
NO19950000396
申请日期
1995.02.03
申请人
BJ SERVICES AS
发明人
HARESTAD, KRISTIAN;HERIGSTAD, THOR-PETTER
分类号
E21B33/136;(IPC1-7):E21B33/134
主分类号
E21B33/136
代理机构
代理人
主权项
地址
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