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经营范围
发明名称
Method of creating an annular seal around a tubular element
摘要
申请公布号
GB2464428(A)
申请公布日期
2010.04.21
申请号
GB20100002221
申请日期
2008.08.18
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人
ERIK KERST CORNELISSEN;NOULINE DIJKSTRA;PAUL OUWERKERK
分类号
E21B33/12
主分类号
E21B33/12
代理机构
代理人
主权项
地址
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