Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859498 | Chip component holding plate | — | 1989-08-22 |
| 4853524 | Optical identification card system | Shunichi Ishikawa, Hideo Tamura, Hirokazu Tanaka, Tomio Nakaya, Kiyomitsu Ishikawa | 1989-08-01 |