Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8091654 | Rock bit with vectored hydraulic nozzle retention sleeves | Luca Tedeschi, James L. Larsen, Gary R. Portwood | 2012-01-10 |
| 7913778 | Rock bit with hydraulic configuration | Luca Tedeschi, James L. Larsen, Gary R. Portwood | 2011-03-29 |