Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11423868 | Keyboard device and musical sound emission method | Takahiro Murai | 2022-08-23 |
| 11252502 | Sound emitting device, electronic keyboard musical instrument and sound emitting method | Takahiro Murai | 2022-02-15 |