Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868359 | Radiation sealed door in a microwave heating apparatus | Koji Iwabuchi, Tetsuo Kubota, Masaharu Tawada | 1989-09-19 |
| 4795496 | Method of removing adherent foreign matter from work pieces | Shintaro Karaki, Yoshikazu Chigodo, Masaaki Okane | 1989-01-03 |