Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5511053 | LDP karaoke apparatus with music tempo adjustment and singer evaluation capabilities | — | 1996-04-23 |
JJ
Jeong Jae-Chang
Overall (All Time): #3,741,266 of 4,157,543Top 90%
1
Patents All Time