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Patent applications and USPTO patent grants for Smith; David George Livesey.The latest application filed is for "injecting a fluid into a borehole ahead of the bit".
Patent | Date |
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Injecting a fluid into a borehole ahead of the bit Grant 7,281,592 - Runia , et al. October 16, 2 | 2007-10-16 |
Steerable rotary drill bit assembly with pilot bit Grant 7,207,398 - Runia , et al. April 24, 2 | 2007-04-24 |
Steerable rotary drill bit assembly with pilot bit App 20040238221 - Runia, Douwe Johannes ;   et al. | 2004-12-02 |
Injecting a fluid into a borehole ahead of the bit App 20040238218 - Runia, Douwe Johannes ;   et al. | 2004-12-02 |
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