Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5032796 | Solid state amplifier simulating vacuum tube distortion characteristics | Thomas E. Kieffer | 1991-07-16 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5032796 | Solid state amplifier simulating vacuum tube distortion characteristics | Thomas E. Kieffer | 1991-07-16 |