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发明名称
CONJUNTO DE TOBERA PARA TREPANO DE PERFORACION ROTATIVO Y METODO DE INSTALACION
摘要
申请公布号
AR240499(A1)
申请公布日期
1990.04.30
申请号
AR19880312508
申请日期
1988.11.21
申请人
REED TOOL COMPANY
发明人
分类号
B05B15/06;B25B9/00;B25B13/02;B25B13/48;E21B10/60;E21B10/61;E21B10/62;(IPC1-7):E21B43/11
主分类号
B05B15/06
代理机构
代理人
主权项
地址
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