Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5048287 | Tuned exhaust processor assembly | Michael G. Howe, Robert T. Usleman | 1991-09-17 |
| 5009065 | Tuned exhaust processor assembly | Michael G. Howe, Robert T. Usleman | 1991-04-23 |
| 4961314 | Tuned exhaust processor assembly | Michael G. Howe, Robert T. Usleman | 1990-10-09 |
| 4850189 | Manifold baffle system | Freddie A. Baldwin | 1989-07-25 |
| 4689952 | Tuned exhaust manifold | Freddie A. Baldwin | 1987-09-01 |
| 4624539 | Portable mirror device for rear view observation in a motor vehicle | Peter King | 1986-11-25 |
| 4430775 | Muffler shield banding strap | — | 1984-02-14 |
| 4334703 | Tube-to-plate connection | Graham F. Thieman | 1982-06-15 |
| 4333672 | Tube-to-tube connection | Graham F. Thieman | 1982-06-08 |