Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887030 | Testing device for electrical circuit boards | Kenichi Niki, Tohru Kokogawa, Akira Ishizu | 1989-12-12 |
| 4854230 | Screen printing apparatus | Kenichi Niki, Tetsuro Makita | 1989-08-08 |