Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10839781 | Electronic musical instrument and electronic musical instrument system | Shinichi Ohta | 2020-11-17 |
| 10614727 | Musical instrument practice system, playing practice implementation device, content reproduction system, and content reproduction device | Yasuhiko Asahi, Yuji Takahashi, Kenichi Shiba, Jun Usui, Kouki Hayafuchi | 2020-04-07 |