Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6328535 | Flow control valve capable of adjusting fluid flow characteristics in accordance with a position of a valve element in a bore | Derek Keith Brighton | 2001-12-11 |
| 6296456 | Positive displacement pump systems with a variable control orifice | Derek Keith Brighton, Matthew Williamson | 2001-10-02 |
| 4391569 | Positive displacement pump systems | Ian T. Bristow | 1983-07-05 |