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经营范围
发明名称
Dypvannsstigerorsystem
摘要
申请公布号
NO320336(B1)
申请公布日期
2005.11.21
申请号
NO19990003186
申请日期
1999.06.25
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV
发明人
BALINT STEPHEN WILLIAM;COX BOBBY EUGENE;EKVALL ANDERS GUSTAF CONNY
分类号
E21B17/01;E21B19/00;(IPC1-7):E21B17/01
主分类号
E21B17/01
代理机构
代理人
主权项
地址
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