Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689081 | Network karaoke system of broadcast type having supplementary communication channel | — | 1997-11-18 |
KT
Kanehisa Tsurumi
Overall (1997): #121,462 of 185,788Top 70%
1
Patents 1997