Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863196 | Certification identifying medium | Kazuhiko Ohnishi | 1989-09-05 |
| 4855584 | Method for identifying certification identifying media | Hiroshi Tomiyama | 1989-08-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863196 | Certification identifying medium | Kazuhiko Ohnishi | 1989-09-05 |
| 4855584 | Method for identifying certification identifying media | Hiroshi Tomiyama | 1989-08-08 |