Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4762377 | Mattress construction for pneumatic mattress track system | — | 1988-08-09 |
| 4715668 | Pneumatic mattress track system for vehicles | — | 1987-12-29 |
| 4369853 | Air-cushion vehicle | Pentti Heijola | 1983-01-25 |