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发明名称
MULTIPLE CUTTER ROTARY HAMMER BIT
摘要
申请公布号
EP1230465(A1)
申请公布日期
2002.08.14
申请号
EP20000978310
申请日期
2000.10.31
申请人
RELTON CORPORATION
发明人
NIEVES, MARCELO, REYES
分类号
E21B10/40;E21B10/44;E21B10/58;(IPC1-7):E21B10/44
主分类号
E21B10/40
代理机构
代理人
主权项
地址
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