Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883933 | Traveling wire electroerosion machine | Makoto Tanaka | 1989-11-28 |
| 4862095 | Wire electrode breakage detection method and apparatus | Masahiro Yamamoto | 1989-08-29 |
| 4839487 | Wire electrode for wire-cut electrical discharge machining | Haruhiko Ito, Yoshio Shibata, Masato Banzai | 1989-06-13 |