Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4716972 | Floating drilling platform | Torsten Heideman | 1988-01-05 |
| 4596291 | Floating drilling platform | Torsten Heideman | 1986-06-24 |
| 4411631 | Propeller guard | Stefan Gordin | 1983-10-25 |
| 4351255 | Ice-breaking ship | Bengt Johansson, Arno Keinonen | 1982-09-28 |