Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6751323 | Electroacoustic apparatus having ringing signal generation means capable of producing a subjective bass perception | — | 2004-06-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6751323 | Electroacoustic apparatus having ringing signal generation means capable of producing a subjective bass perception | — | 2004-06-15 |