Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4810086 | Portable microfilm reader | Hajime Tachibana, Hiroshi Fukuda, Tetsuo Udagawa, Koji Ohgaki, Shigeru Kojima | 1989-03-07 |
| 4810087 | Portable microfilm reader | Hajime Tachibana, Hiroshi Fukuda, Tetsuo Udagawa, Koji Ohgaki, Shigeru Kojima | 1989-03-07 |