Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4529849 | Push-button switch and a keyboard comprising the same | Toshiaki Tanaka, Kazutoshi Hayashi, Akira Tanaka, Ryohei Kinoshita | 1985-07-16 |
| 4370533 | Keyboard switch and process for production thereof | Hideo Nabetani, Ryohei Kinoshita | 1983-01-25 |