Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5899161 | Ship with plane area elements which extend horizontally and are located in the hull of the ship | Gunther Sell, Johann Wilts | 1999-05-04 |
| 4864950 | Icebreaker | Oskar Schuler | 1989-09-12 |