Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6809609 | Device for preventing mixing of extrinsic noise and protector | Akira Hayakawa, Masatoshi Sugita | 2004-10-26 |
| 6730872 | Method of and apparatus for wire electric-discharge machining | Akihiro Goto, Tatsushi Sato, Toshio Nakashima | 2004-05-04 |
| 6723941 | Wire electric-discharge machining apparatus | Tatsushi Sato | 2004-04-20 |