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发明名称
TREPANO DE PERFORACION CON ALETAS DE CORTE
摘要
申请公布号
AR240183(A1)
申请公布日期
1990.02.28
申请号
AR19860305361
申请日期
1986.09.24
申请人
FEMYP S.R.L.
发明人
分类号
E21B7/00;(IPC1-7):E21B7/00
主分类号
E21B7/00
代理机构
代理人
主权项
地址
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