Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5087230 | Drive transmissions | David Yates, Alan De Ville | 1992-02-11 |
| 5083989 | Drive transmissions | David Yates, Alan De Ville | 1992-01-28 |
| 4583413 | Toothed gear system | — | 1986-04-22 |