Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6515213 | Keyboard musical instrument for exactly producing tones and hammer sensor varying output signal exactly representing physical quantity of hammer | Shigeru Muramatsu, Tsutomu Sasaki | 2003-02-04 |
| 6515565 | Electromagnetic device equipped with solenoid, automatic player using the same and automatic player keyboard musical instrument | Shigeru Muramatsu | 2003-02-04 |