Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889271 | Feed roller | — | 1989-12-26 |
| 4869657 | Magnetic pump of a photographic processing bath | — | 1989-09-26 |
| 4825617 | Fire-resistant open joint structure and its method | Ryoji Kinoshita, Keizou Misawa, Hideaki Watanabe, Hidehiko Aoki, Hidefumi Ono | 1989-05-02 |