Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6783428 | Method for forming grooves on workpiece and for dressing a grindstone used in the groove formation | Akio Sakai, Katsuyuki Yamamoto, Hiroyuki Ikeda, Masami Tanaka | 2004-08-31 |