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发明名称
KOBLINGSANORDNING.
摘要
申请公布号
NO854061(A)
申请公布日期
1986.04.17
申请号
NO19850004061
申请日期
1985.10.14
申请人
VETCO OFFSHORE IND INC
发明人
HUGHES DAVID WAYNE
分类号
E21B33/038;E21B33/043;(IPC1-7):E21B33/038
主分类号
E21B33/038
代理机构
代理人
主权项
地址
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