Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10167612 | Counterweight device for arranging accumulators inside the counterweight of a working machine | Akito Nakai | 2019-01-01 |
| 7380376 | Non-slip structure | Shunji Ohno, Norio Nakajima, Kazumichi Iwasa, Masanori Tsuji, Tsuyoshi Doi +3 more | 2008-06-03 |