Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7019202 | Acoustic guitar with reverberating bridge assembly | — | 2006-03-28 |
| 4911665 | Gearcase exhaust relief for a marine propulsion system | — | 1990-03-27 |
| 4865520 | Marine propeller with addendum | Stephan Konrad | 1989-09-12 |