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发明名称
En fremgangsmate for fremstilling av lagerelementer for rulleborekroner, samt en slik borekrone
摘要
申请公布号
NO20045564(D0)
申请公布日期
2004.12.20
申请号
NO20040005564
申请日期
2004.12.20
申请人
STATOIL ASA - I&K IR PAT
发明人
JOHANSEN KNUT H;SCHJELDERUP HARALD;SILSETH KNUT MARTIN;SAASEN ARILD
分类号
E21B;(IPC1-7):E21B
主分类号
E21B
代理机构
代理人
主权项
地址
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