Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7511571 | Single-ended screen-regulated cathode-follower output stage for high-fidelity music amplifier | Martin G. Reiffin | 2009-03-31 |
| 5498996 | High-power, high-fidelity tube amplifier | — | 1996-03-12 |