Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4554428 | Electrospark machining control device | Toshimitsu Sakakibara, Shigeo Yamada | 1985-11-19 |
| 4484051 | Breakthrough detection means for electric discharge machining apparatus | Shigeo Yamada, Toshimitsu Sakakibara | 1984-11-20 |
| 4458190 | Electric discharge machining control device | Toshimitsu Sakakibara, Shigeo Yamada | 1984-07-03 |
| 4415791 | Breakthrough detection means for electric discharge machining apparatus | Shigeo Yamada, Toshimitsu Sakakibara | 1983-11-15 |
| 4406938 | Discharge machining apparatus | Shigeo Yamada, Toshimitsu Sakakibara | 1983-09-27 |