Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4641565 | Upright piano | Takane Sato, Shigeaki Sato | 1987-02-10 |
| 4593594 | Housing for upright pianos | Takane Sato, Shigeaki Sato | 1986-06-10 |
| 4199124 | Improved structure for connecting a leg to a massive body | — | 1980-04-22 |