Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D716507 | Aquarium cleaner | — | 2014-10-28 |
| D687191 | Aquarium cleaner | — | 2013-07-30 |
| D561406 | Aquarium feeder | — | 2008-02-05 |
| D557375 | Aquarium filter | — | 2007-12-11 |
| D517644 | Aquarium filter | — | 2006-03-21 |
| D474526 | Filter for an aquarium | — | 2003-05-13 |
| D474527 | Holder for a filter for an aquarium | — | 2003-05-13 |
| 6187179 | Outside filter, in particular for aquarium | Walter Wiedenmann | 2001-02-13 |
| D428109 | Aquarium filter | — | 2000-07-11 |
| 5567315 | Lifting-lowering type aquarium filter | Walter Weidenmann, Frank v. Luetzau, Gerhard Frank, Michael Schmidt, Ulrich Herold | 1996-10-22 |
| 5404840 | Covering device for an aquarium, terrarium or similar vivarium | Walter Wiedenmann, Ulrich Herold, Gerhard Frank, Albert Baier, Michael Schmidt +1 more | 1995-04-11 |
| 5277800 | Inner filter for aquarium | Klaus Dieckmann, Ulrich Herold, Walter Wiedenmann | 1994-01-11 |