Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364711 | Folding boat propeller | Lennart H. Brandt, Ingvar Hultmark, Lars H. Petersson | 1982-12-21 |
| 4275991 | Boat propeller | — | 1981-06-30 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364711 | Folding boat propeller | Lennart H. Brandt, Ingvar Hultmark, Lars H. Petersson | 1982-12-21 |
| 4275991 | Boat propeller | — | 1981-06-30 |