Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878788 | Drill for drilling a thin plate | Koichiro Wakihira, Michitaka Katsuta, Toshio Sasayama | 1989-11-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878788 | Drill for drilling a thin plate | Koichiro Wakihira, Michitaka Katsuta, Toshio Sasayama | 1989-11-07 |