Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4180920 | Arrangement toy for signalling proper arrangement of elements | Hideki Kida | 1980-01-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4180920 | Arrangement toy for signalling proper arrangement of elements | Hideki Kida | 1980-01-01 |