Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11335306 | Percussion instrument having at least one tone bar | Knut Hoyer, Ralph Bremenkamp | 2022-05-17 |
| 11295711 | Percussion instrument with at least two tone bars | Knut Hoyer, Judit Angster, Andras Miklos | 2022-04-05 |