Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D290818 | Controller for air conditioners | Hideyuki Ikeda, Isao Arai, Shigeru Saito | 1987-07-14 |
| D280217 | Talking mathematics trainer | Yoshihiko Nagao, Shigeru Saito | 1985-08-20 |