Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5013187 | Positioning components and energizing sealing assemblies therefor | Brian MacIntyre, Sean McAvoy | 1991-05-07 |
| 4957313 | Emergency suspension system for drill casings | Brian MacIntyre, Sean McAvoy | 1990-09-18 |
| 4951972 | Rotatable sealing assemblies | Brian MacIntyre, Sean McAvoy | 1990-08-28 |