Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11647845 | Changing table | Guy Cowdry, Peter Deverson | 2023-05-16 |
| 6962214 | Rotary seal for directional drilling tools | Peter Raymond Hughes, Nigel Dennis Griffin | 2005-11-08 |
| 5971085 | Downhole unit for use in boreholes in a subsurface formation | — | 1999-10-26 |
| 5603385 | Rotatable pressure seal | — | 1997-02-18 |