Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830501 | End face polishing device | Kouji Minami, Hisayuki Hirayama, Kisaburo Yoshida | 2004-12-14 |
| 6817925 | Multistage fine hole machining method and device | Tatsuji Saigo, Hideo Iwadate, Hiroyuki Kihara | 2004-11-16 |