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经营范围
发明名称
SURFACE WELLHEAD
摘要
申请公布号
EP0251595(A3)
申请公布日期
1989.03.22
申请号
EP19870305462
申请日期
1987.06.19
申请人
PLEXUS OCEAN SYSTEMS LIMITED
发明人
VAN BILDERBEEK, BERNARD HERMAN
分类号
E21B33/04;E21B33/043;(IPC1-7):E21B33/04
主分类号
E21B33/04
代理机构
代理人
主权项
地址
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