Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D475726 | Engine-driven welding machine | Koji Suga, Kenji Katsuki, Toshiaki Tanaka, Shoichi Fujimoto | 2003-06-10 |
| 5575349 | Soundproof type water-cooled engine generator | Takatoshi Ikeda, Toshiaki Tanaka | 1996-11-19 |