Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7718877 | Device and musical instrument | — | 2010-05-18 |
| 7288707 | Device for setting the tension of a skin of a musical instrument | — | 2007-10-30 |
| 4263164 | Method of preparing a luminescent aluminate | Rudolfus J. C. Bannenberg, Johannes H. A. Schmitz | 1981-04-21 |