Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698115 | Electrical discharge machine | Mitsuyoshi Wada, Yoshio Ozaki | 1997-12-16 |
| 5681488 | Electrical discharge machine which uses voltages of opposite polarity | Mitsuyoshi Wada, Yoshio Ozaki | 1997-10-28 |
| 5603852 | Electrical discharge machine with an opposite polarity voltage applied during an electrode jump operation | Mitsuyoshi Wada, Yoshio Ozaki | 1997-02-18 |