Issued Patents 2020
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10614727 | Musical instrument practice system, playing practice implementation device, content reproduction system, and content reproduction device | Yasuhiko Asahi, Yuji Takahashi, Jun Usui, Kouki Hayafuchi, Kenichi Yamauchi | 2020-04-07 |