Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7426278 | Sound device provided with a geometric and electronic radiation control | — | 2008-09-16 |
| 4714001 | Device for obtaining quarter-tones and other micro-intervals on musical wind instruments with lateral holes | Jean Kergomard | 1987-12-22 |