Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4803316 | Push button switch using dome spring and switch element thereof | Kazutoshi Hayashi, Toshiaki Tanaka, Kazushi Ishida | 1989-02-07 |
| 4370533 | Keyboard switch and process for production thereof | Seisuke Kamei, Ryohei Kinoshita | 1983-01-25 |