Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4422360 | Device for improving piano tone quality | — | 1983-12-27 |
| 4324164 | Tone changing means for percussion instruments | Charles Monte | 1982-04-13 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4422360 | Device for improving piano tone quality | — | 1983-12-27 |
| 4324164 | Tone changing means for percussion instruments | Charles Monte | 1982-04-13 |