Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5550508 | Phase inverter selection apparatus for tone alteration in a tube-type audio amplifier | — | 1996-08-27 |
| 5550509 | Output power selection apparatus for a tube-type audio amplifier | — | 1996-08-27 |
| 5546046 | Output tube bias selection apparatus for tone alteration in a tube-type audio amplifier | — | 1996-08-13 |