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发明名称
TEILWEISE DURCH DIAMANTEN VERSTÄRKTER BOHRMEISSEL
摘要
申请公布号
DE69823220(D1)
申请公布日期
2004.05.19
申请号
DE1998623220
申请日期
1998.08.14
申请人
SANDVIK AB (PUBL), SANDVIKEN
发明人
INGMARSSON, KARL
分类号
E21B10/56;(IPC1-7):E21B10/46
主分类号
E21B10/56
代理机构
代理人
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