Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828059 | Wall-crawling machine | Shinji Naito, Yoshiaki Ichikawa, Chikara Sato, Shigeru Kajiyama | 1989-05-09 |
| 4824633 | Method and apparatus for controlling refuelling machine of reactor | Yoshiaki Ichikawa, Makoto Senoh, Akira Koizumi, Kunihiko Iwama | 1989-04-25 |