Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6914186 | Working-fluid storing device of electric discharge machining apparatus | Ryogo Koba, Toshio Suzuki | 2005-07-05 |
| 6831245 | Wire electric discharge machining device | Ryogo Koba, Makoto Tanaka | 2004-12-14 |
| D428025 | Electric discharge machine | Takanori Miyake, Kenta Kawahara | 2000-07-11 |