Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D344748 | Computer ribbon reinking system | Hiroshi Wada, Shigeo Oka | 1994-03-01 |
| 5190385 | Ink ribbon regenerating device | Tetuo Taguchi, Hiroshi Wada, Yutaka Shinohara, Yoshihiro Wada, Isao Onuki +2 more | 1993-03-02 |