Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D386488 | Data entry keyboard | Masaaki Kageyama, Hideki Ito, Yoshirou Koutaka, Takahiro Murakami, Katsuyuki Katayama | 1997-11-18 |
| 5661289 | Card and card check method | Hiroshi Sasou, Atsushi Yamazaki | 1997-08-26 |