Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6024186 | Auxiliary power supply apparatus for bicycles | — | 2000-02-15 |
| D271120 | Toy trackway | Hajime Matsumoto | 1983-10-25 |
| 4357778 | Toy vehicle and trackway | Hajime Matsumoto | 1982-11-09 |