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经营范围
发明名称
BORKRONE MED ROTASJONSKONUSER UTSTYRT MED KNASTER.
摘要
申请公布号
NO911387(A)
申请公布日期
1991.10.14
申请号
NO19910001387
申请日期
1991.04.10
申请人
SMITH INTERNATIONAL INC
发明人
NGUYEN, QUAN VAN
分类号
E21B10/16;(IPC1-7):E21B10/16
主分类号
E21B10/16
代理机构
代理人
主权项
地址
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