Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5597986 | Stamp formed muffler with nested chambers | Jon W. Harwood | 1997-01-28 |
| 5004069 | Stamp formed muffler with transverse baffle tube | Jon W. Harwood, Mark S. Kimmet | 1991-04-02 |
| 4765437 | Stamp formed muffler with multiple low frequency resonating chambers | Jon W. Harwood, Bruno A. Rosa, Mark S. Kimmet | 1988-08-23 |