Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6657143 | Key switch apparatus for electronic musical instruments | — | 2003-12-02 |
| 6638689 | Photoresist compositions and flexible printed wiring boards with protective layer | Satoshi Takahashi, Akira Tsutsumi, Koichi Uno | 2003-10-28 |