Hosoi; Ryosuke
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hosoi; Ryosuke.The latest application filed is for "drill having cutting edges with the greatest curvature at the central portion thereof".
- Hosoi; Ryosuke - Kami-minami Hirano-ku JP
- Hosoi; Ryosuke - Osaka JP
| Patent | Date |
|---|---|
| Drill having cutting edges with the greatest curvature at the central portion thereof Grant 4,381,162 - Hosoi April 26, 1 | 1983-04-26 |
| Drill having cutting edges with the greatest curvature at the central portion thereof Grant 4,222,690 - Hosoi September 16, 1 | 1980-09-16 |
| Ball end mill Grant 4,132,493 - Hosoi January 2, 1 | 1979-01-02 |
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