Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6916220 | Removable fin system | Graeme Davey, Derek J. Harper | 2005-07-12 |
| 5649846 | Pivotable fin system | Derek J. Harper, Graeme Davey, Fred Banyard | 1997-07-22 |
| 5263338 | Environmental crusher cooler | — | 1993-11-23 |