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经营范围
发明名称
Sammensatt hybridstiger÷r
摘要
申请公布号
NO981701(D0)
申请公布日期
1998.04.16
申请号
NO19980001701
申请日期
1998.04.16
申请人
KVAERNER OILFIELD PRODUCTS AS
发明人
BAALERUD, PER-OLA;JAHNSEN, OVE F.
分类号
E21B17/01;(IPC1-7):E21B
主分类号
E21B17/01
代理机构
代理人
主权项
地址
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