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发明名称
Broennhodeutstyr med ventiltre og utblaasingssikring
摘要
申请公布号
NO940307(D0)
申请公布日期
1994.01.28
申请号
NO19940000307
申请日期
1994.01.28
申请人
EXPLORATION & PRODUCTION SERVICES (NORTH SEA) LIMITED
发明人
COUTTS GRAEME FORBES;EDWARDS JEFFREY CHARLES
分类号
E21B33/064;E21B34/04;(IPC1-7):E21B
主分类号
E21B33/064
代理机构
代理人
主权项
地址
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