Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6148086 | Method and apparatus for replacing a voice with an original lead singer's voice on a karaoke machine | Nancy L. Reyes, David P. Berners | 2000-11-14 |
| 5969282 | Method and apparatus for adjusting the pitch and timbre of an input signal in a controlled manner | David P. Berners | 1999-10-19 |