Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7209288 | Snorkel device for a submarine | Michael Mente, Wolfgang Scharf, Christian Buck | 2007-04-24 |
| 7000561 | Mast device for a submarine | Lorenz Krüger, Jürgen Spahr, Wolfgang Scharf | 2006-02-21 |
| 6907839 | Mast device for a submarine | Lorenz Krüger, Jürgen Spahr, Wolfgang Scharf | 2005-06-21 |
| 4646449 | Bucket wheel dredging device | Siegfried Steinkuhler | 1987-03-03 |