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经营范围
发明名称
STIGEROER.
摘要
申请公布号
NO158471(C)
申请公布日期
1988.09.14
申请号
NO19810001183
申请日期
1981.04.07
申请人
REGAN OFFSHORE INTERNATIONAL INC.
发明人
WATKINS, BRUCE J.
分类号
E21B17/01;E21B17/08;(IPC1-7):E21B17/01;F16L19/02
主分类号
E21B17/01
代理机构
代理人
主权项
地址
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