Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9643495 | Pantograph device of trolley truck | Hiroyuki Kanazawa, Shinji Akino | 2017-05-09 |
| 7870938 | Collector shoe device | Fumio Okimoto, Isao Naruse, Yasuki Nakakura, Yasutaka Terada, Nobuo Yamanaka +2 more | 2011-01-18 |