Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853524 | Optical identification card system | Masami Yamaguchi, Shunichi Ishikawa, Hideo Tamura, Hirokazu Tanaka, Kiyomitsu Ishikawa | 1989-08-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853524 | Optical identification card system | Masami Yamaguchi, Shunichi Ishikawa, Hideo Tamura, Hirokazu Tanaka, Kiyomitsu Ishikawa | 1989-08-01 |