Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5357505 | Device for bidirectional communication on a telephone line | Mihoji Tsumura | 1994-10-18 |
| 5353337 | Device for the transmission of data by telephone line | Mihoji Tsumura | 1994-10-04 |
| 5294746 | Backing chorus mixing device and karaoke system incorporating said device | Mihoji Tsumura | 1994-03-15 |
| 5262765 | Animation image composition and display device | Mihoji Tsumura | 1993-11-16 |
| 5231239 | Music reproduction device for restarting a song at selected positions | Mihoji Tsumura | 1993-07-27 |
| 5208413 | Vocal display device | Mihoji Tsumura | 1993-05-04 |
| 5194683 | Karaoke lyric position display device | Mihoji Tsumura | 1993-03-16 |
| 5127303 | Karaoke music reproduction device | Mihoji Tsumura | 1992-07-07 |
| 5046004 | Apparatus for reproducing music and displaying words | Mihoji Tsumura | 1991-09-03 |