Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11578722 | Multi-stage vacuum booster pump coupling | David Alan Turrell | 2023-02-14 |
| 11542946 | Twin-shaft pumps with thermal breaks | Phillip North, Michael Henry North, Malcolm William Gray, David Alan Turrell | 2023-01-03 |