Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5513149 | Sound damping arrangement | Pekka Salmi, Jonas Packalen | 1996-04-30 |
| 5074813 | Method and arrangement on a vessel | Juha A. Heikinheimo, Erkki V. E. Hirvonen | 1991-12-24 |
| 5036781 | Method and the means for removing ice from a ship's channel | — | 1991-08-06 |
| 4973275 | Method and arrangement on a vessel | Juha A. Heikinheimo, Erkki V. E. Hirvonen | 1990-11-27 |