Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703308 | Karaoke apparatus responsive to oral request of entry songs | Hirokazu Kato | 1997-12-30 |
| 5654516 | Karaoke system having a playback source with pre-stored data and a music synthesizing source with rewriteable data | Youji Semba | 1997-08-05 |