Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5013419 | Coating apparatus | David S. Rickerby, Derek S. Whitmell, Richard S. Nelson | 1991-05-07 |
| 4885069 | Coating improvements | David S. Rickerby, Philip Warrington | 1989-12-05 |
| 4470895 | Coatings for cutting implements | Samuel R. Keown | 1984-09-11 |