Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839487 | Wire electrode for wire-cut electrical discharge machining | Haruhiko Ito, Yoshio Shibata, Takeshi Yatomi | 1989-06-13 |
| 4806721 | Wire electrode for wire-cut electrical discharge machining | Haruhiko Ito, Yoshio Shibata | 1989-02-21 |