Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9856701 | Rolling cone drill bit having high density cutting elements | Gary R. Portwood, Luca Tedeschi, Joshua Gatell, John Clunan, Allen D. White | 2018-01-02 |
| 9074431 | Rolling cone drill bit having high density cutting elements | Gary R. Portwood, Luca Tedeschi, Josh Gatell, John Clunan, Allen D. White | 2015-07-07 |
| 8316968 | Rolling cone drill bit having sharp cutting elements in a zone of interest | Gary R. Portwood, Carl Aron Deen | 2012-11-27 |