Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6582235 | Method and apparatus for displaying music piece data such as lyrics and chord data | Masahiko Wakita | 2003-06-24 |
| 6572381 | Computer system and karaoke system | — | 2003-06-03 |
| 6504090 | Apparatus and method for practice and evaluation of musical performance of chords | Masahiko Wakita | 2003-01-07 |