Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5174001 | Method and apparatus for finishing grooved articles | Yoshimichi Shirai, Hiromitu Ibe, Kazushi Sugishima | 1992-12-29 |
| 4862575 | Method and apparatus for finishing grooved articles | Yoshimichi Shirai, Hiromitu Ibe, Kazushi Sugishima | 1989-09-05 |