Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6933435 | Easily installable optical position transducer and keyboard musical instrument having the same | Tadaharu Kato, Shigeru Muramatsu | 2005-08-23 |
| 6846982 | Key depression detection apparatus for keyboard instrument | — | 2005-01-25 |