Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6552251 | Actuating device easily assembled and keyboard musical instrument equipped therewith | Shigeru Muramatsu | 2003-04-22 |
| 5994632 | Automatic player piano with magnetic velocity sensor shielded from solenoid-operated key actuators | Shigeru Muramatsu | 1999-11-30 |