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经营范围
发明名称
Plug device
摘要
申请公布号
GB2459424(A)
申请公布日期
2009.10.28
申请号
GB20090015390
申请日期
2008.03.13
申请人
AKER WELL SERVICE AS
发明人
JOHN ARILD ¢STEVIK
分类号
E21B33/128;E21B23/06;E21B33/12;E21B33/134
主分类号
E21B33/128
代理机构
代理人
主权项
地址
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