Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9080390 | Turbine driven reaming bit with profile limiting torque fluctuation | Silvino M. Ersan, Anthony Phillips, Rudolf Carl Pessier, Thorsten Schwefe | 2015-07-14 |
| 8978787 | Turbine driven reaming bit with blades and cutting structure extending into concave nose | Silvino M. Ersan, Anthony Phillips, Rudolf Carl Pessier, Thorsten Schwefe | 2015-03-17 |
| 8973685 | Turbine driven reaming bit with stability and cutting efficiency features | Silvino M. Ersan, Anthony Phillips, Rudolf Carl Pessier, Thorsten Schwefe | 2015-03-10 |