Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10702929 | Drilling machine and method of manufacturing drilled product | Hisayuki Hirai, Yuzuru Ono, Shigeru Shibata | 2020-07-07 |
| 10265780 | Drilling machine and method of manufacturing drilled product | Yuzuru Ono, Hisayuki Hirai, Shigeru Shibata | 2019-04-23 |