Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880516 | Electro-chemical machine | Youhei Kuwabara, Teruo Asaoka | 1989-11-14 |
| 4842702 | Method for finishing a work | Youhei Kuwabara, Teruo Asaoka | 1989-06-27 |
| 4800006 | Electrolytic finishing system and method | Youhei Kuwabara, Teruo Asaoka, Masayoshi Moriya, Haruki Sugiyama | 1989-01-24 |