Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5066171 | Method for drilling a printed circuit board | Kunio Arai, Hiroshi Aoyama, Yasuhiko Kanaya | 1991-11-19 |
| 4997319 | Apparatus for drilling a hole in a printed circuit board | Kunio Arai, Hiroshi Aoyama, Yasuhiko Kanaya | 1991-03-05 |
| 4872787 | Method of drilling printed circuit board | Kunio Arai, Hiroshi Aoyama, Yasuhiko Kanaya | 1989-10-10 |