Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8631874 | Apparatus and method for managed pressure drilling | John Kozicz, Andy Legault, Sandy Black, John Mackay, Scott Niven +1 more | 2014-01-21 |
| 7866399 | Apparatus and method for managed pressure drilling | John Kozicz, Andy Legault, Sandy Black, John Mackay, Scott Niven +1 more | 2011-01-11 |