Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4718513 | Wheel driven air cushion vehicle | Martin Landtman | 1988-01-12 |
| 4591015 | Wheel propulsion device for air cushion vehicle | Martin Landtman | 1986-05-27 |
| 4549626 | Arrangement in air cushion vehicles | Henry Hanel | 1985-10-29 |