Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9713846 | 3-blade drill | Kazuteru Takai | 2017-07-25 |
| 9492877 | Drill | Kazuteru Takai, Hiroyuki Amano | 2016-11-15 |
| 4815921 | Article containment apparatus | Katsuyuki Yamamoto, Kazuo Kishimoto, Wakio Yamashita | 1989-03-28 |