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发明名称
FLEXIBLE RISER SYSTEM
摘要
申请公布号
GB8709301(D0)
申请公布日期
1987.05.20
申请号
GB19870009301
申请日期
1987.04.16
申请人
BECHTEL LTD
发明人
分类号
E21B17/01;E21B43/013;E21B43/017;F16L37/00;(IPC1-7):E21B43/01
主分类号
E21B17/01
代理机构
代理人
主权项
地址
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