Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6508483 | Sidecar steering aid | — | 2003-01-21 |
| 5567315 | Lifting-lowering type aquarium filter | Walter Weidenmann, Frank v. Luetzau, Michael Schmidt, Ferdinand Mayer, Ulrich Herold | 1996-10-22 |
| 5404840 | Covering device for an aquarium, terrarium or similar vivarium | Walter Wiedenmann, Ulrich Herold, Ferdinand Mayer, Albert Baier, Michael Schmidt +1 more | 1995-04-11 |