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发明名称
PRODUCTION RISER ASSEMBLY
摘要
申请公布号
GB2097042(A)
申请公布日期
1982.10.27
申请号
GB19820011074
申请日期
1982.04.16
申请人
VETCO OFFSHORE INC
发明人
分类号
E21B17/01;E21B33/038;E21B43/01;E21B43/017;(IPC1-7):E21B17/01
主分类号
E21B17/01
代理机构
代理人
主权项
地址
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