Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6392173 | Automatic switchover device for power source | Tsutomu Hirano, Koichi Asai | 2002-05-21 |
| 6362537 | Power unit | Koichi Asai, Motohiro Shimizu | 2002-03-26 |
| 6344988 | Power unit | Koichi Asai, Motohiro Shimizu | 2002-02-05 |