Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5312208 | Burnishing drill | Kiyotaka Shiga, Nobuya Matsushita, Akio Fukui, Tsunehisa Yamashita | 1994-05-17 |
| 5282705 | Burnishing drill | Kiyotaka Shiga, Akio Fukui, Masaki Yasuhara, Tsunehisa Yamashita | 1994-02-01 |