Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5350261 | Twist drill | Sueji Takaya, Kazuaki Tone | 1994-09-27 |
| 5217332 | Drill bit for advanced materials | Yasunori Murakami, Hiroshi Kasutani, Koji Hashimoto, Yutaka Adachi | 1993-06-08 |