Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5285598 | Method for drilling a processed hole to a hard but brittle material and a device therefor | Toshihiko Hirabayashi | 1994-02-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5285598 | Method for drilling a processed hole to a hard but brittle material and a device therefor | Toshihiko Hirabayashi | 1994-02-15 |