Kristiansen; Steffen S.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kristiansen; Steffen S..The latest application filed is for "cutter having shaped working surface with varying edge chamfer".
- Kristiansen; Steffen S. - Stavanger NO
| Patent | Date |
|---|---|
| Cutter having shaped working surface with varying edge chamfer Grant 8,037,951 - Shen , et al. October 18, 2 | 2011-10-18 |
| Cutter Having Shaped Working Surface With Varying Edge Chamfer App 20110031030 - SHEN; YUELIN ; et al. | 2011-02-10 |
| Cutter having shaped working surface with varying edge chamfer Grant 7,726,420 - Shen , et al. June 1, 2 | 2010-06-01 |
| Cutter having shaped working surface with varying edge chamber App 20050247492 - Shen, Yuelin ; et al. | 2005-11-10 |
| Drill bit having adjustable total flow area Grant 6,698,538 - Kristiansen , et al. March 2, 2 | 2004-03-02 |
| Drill bit having adjustable total flow area App 20030010532 - Kristiansen, Steffen S. ; et al. | 2003-01-16 |
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