Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880509 | Electrolytic finishing method and apparatus | Youhei Kuwabara, Teruo Asaoka, Haruki Sugiyama | 1989-11-14 |
| 4861450 | Power supply system for electrolytic processing apparatus | Teruo Asaoka | 1989-08-29 |