Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5072644 | Synthetic recording device in an automatic performance piano | Yasuhiko Oba | 1991-12-17 |
| 4744281 | Automatic sound player system having acoustic and electronic sound sources | — | 1988-05-17 |
| 4724736 | Keyboard musical instruments with transpositional function | — | 1988-02-16 |
| 4704931 | Acoustic tone inhibiting means for keyboard musical instrument | Yohei Nagai | 1987-11-10 |