Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6688033 | Ice fishing device | Richard V. Hansen | 2004-02-10 |
| 5037354 | Mechanism useful as a slip clutch or brake | Philip H. Carton-Bacon | 1991-08-06 |
| 4830833 | Catalytic converter | — | 1989-05-16 |
| 4682470 | Catalytic converter for exhaust gases | — | 1987-07-28 |