Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8978692 | Pilot valve for a pressure reducing valve | Andrew Roland Burrows | 2015-03-17 |
| 6813891 | Pulse tube refrigerator | Peter Derek Daniels, David Crowley | 2004-11-09 |
| 6694749 | Rotary valve | — | 2004-02-24 |
| 5349849 | Liquid flow system having improved apparatus for determining particulate contamination level | — | 1994-09-27 |
| 4878785 | Abrasive fluid flow | David H. Saunders | 1989-11-07 |
| 4854090 | Feeding abrasive material | David H. Saunders, Robert M. Fairhurst | 1989-08-08 |
| 4836498 | Liquid flow control assembly | Martin Lawrence Hughes, Ian Hansford | 1989-06-06 |
| 4663966 | Determining the level of contaminants in a hydraulic system | Martin Fisher, Martin Lawrence Hughes | 1987-05-12 |
| 4599893 | Determining the level of contaminants in a hydraulic system | Martin Fisher, Martin Lawrence Hughes | 1986-07-15 |
| 4495799 | Determining the level of contaminants in a hydraulic system | Martin Fisher, Martin Lawrence Hughes | 1985-01-29 |