EARTH-BORING PARTICLE-MATRIX ROTARY DRILL BIT AND METHOD OF MAKING THE SAME |
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| 申请号 | EP10736454 | 申请日 | 2010-01-29 | 公开(公告)号 | EP2391470A4 | 公开(公告)日 | 2014-04-30 |
| 申请人 | BAKER HUGHES INC; | 发明人 | CHOE HEEMAN; STEVENS JOHN; SULLIVAN ERIC; | ||||
| 摘要 | |||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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