Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D281888 | Game housing | Minoru Sugiyama | 1985-12-24 |
| D258899 | Toy piano | Yoshio Hayama, Fumiyuki Kurita | 1981-04-14 |
| D255370 | Toy piano | Yoshio Hayama, Humiuki Kurita | 1980-06-10 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D281888 | Game housing | Minoru Sugiyama | 1985-12-24 |
| D258899 | Toy piano | Yoshio Hayama, Fumiyuki Kurita | 1981-04-14 |
| D255370 | Toy piano | Yoshio Hayama, Humiuki Kurita | 1980-06-10 |