Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5422951 | Low profile telephone set | Yoshiya Takahashi, Katsumi Itoyama, Kouichiro Suda | 1995-06-06 |
| 5303292 | Low profile telephone set | Yoshiya Takahashi, Katsumi Itoyama, Kouichiro Suda | 1994-04-12 |
| D317486 | Toy racing car | — | 1991-06-11 |
| 4533805 | Manual operating device for a slide type electrical device | Katumi Itoyama, Hiroshi Ochiai | 1985-08-06 |