Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6531651 | Key for musical instrument | Mitsuo Yamashita, Hiroyuki Kurita, Masahiko Abiko | 2003-03-11 |
| 5959223 | Method of assembling an upright piano | Riichi Kitashima, Shinichiro Miwa, Hidetaka Hanajima | 1999-09-28 |