Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5299484 | Bearing structure and transmission structure in piano | Muneo Ishida, Masanari Onishi, Masahiro Tanaka | 1994-04-05 |
| 5223652 | Key and keyboard | Muneo Ishida, Masanari Onishi, Masahiro Tanaka | 1993-06-29 |