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发明名称
UTBLAASNINGSSIKRINGSSYSTEM FOR EN UNDERVANNSBROENN.
摘要
申请公布号
NO154025(C)
申请公布日期
1986.07.02
申请号
NO19790001241
申请日期
1979.04.11
申请人
CHEVRON RESEARCH COMPANY
发明人
STEDDUM, RIDDLE E.;RAY, DONALD R.;CRAGER, BRUCE L.
分类号
E21B17/01;E21B33/037;E21B33/06;E21B33/064;(IPC1-7):E21B33/035
主分类号
E21B17/01
代理机构
代理人
主权项
地址
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