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经营范围
发明名称
KOPLINGSANORDNING.
摘要
申请公布号
NO870284(D0)
申请公布日期
1987.01.23
申请号
NO19870000284
申请日期
1987.01.23
申请人
VETCO OFFSHORE INDUSTRIES INC
发明人
JENNINGS, CHARLES;THAMES, EDWARD ELWOOD
分类号
E21B33/038;F16L37/00;(IPC1-7):E21B/
主分类号
E21B33/038
代理机构
代理人
主权项
地址
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