Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5650591 | Waterproof casing | Tatsuya Sumida | 1997-07-22 |
| 5632638 | Card edge connector | Hisashi Konoya, Mitsuhiro Fujitani | 1997-05-27 |
| 5629495 | Waterproof box-like casing | Tatsuya Sumida, Yuichi Akiyama | 1997-05-13 |