Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9454000 | Aperture device and optical instrument | Kazuya Shioda, Kenichi Kudo | 2016-09-27 |
| 8941699 | Front/back discrimination device for time card, time recorder provided with same, front/back discrimination method for the time card, and program | Ryuji Okuyama | 2015-01-27 |
| D318682 | Ink ribbon cassette for a printer | — | 1991-07-30 |