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发明名称
SPEAR TYPE BLOW OUT PREVENTER
摘要
申请公布号
EP1730383(A4)
申请公布日期
2008.11.19
申请号
EP20050732188
申请日期
2005.03.18
申请人
TESCO CORPORATION
发明人
ANGMAN, PER, G.
分类号
E21B33/06;E21B19/06;E21B21/10;E21B33/126;E21B33/128
主分类号
E21B33/06
代理机构
代理人
主权项
地址
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