Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5351662 | Valve control means | Clive Dopson | 1994-10-04 |
| 5345904 | Valve control means | Clive Dopson | 1994-09-13 |
| 5287830 | Valve control means | Clive Dopson | 1994-02-22 |
| 5253621 | Valve control means | Clive Dopson | 1993-10-19 |