Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5499922 | Backing chorus reproducing device in a karaoke device | Toshihiko Umeda | 1996-03-19 |
IT
Itsuma Tsugami
Ricos Co.: 1 patents #5 of 8Top 65%
Overall (All Time): #3,738,486 of 4,157,543Top 90%
1
Patents All Time