Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6640734 | Lower thread winding device | Kiyoshi Matsuzawa, Fumio Wada, Naofumi Fukuba, Hiroyuki Kotaki | 2003-11-04 |
| 6578503 | Embroidery sewing machine with lower thread winding device | Kiyoshi Matsuzawa, Fumio Wada, Yuichi Sukegawa | 2003-06-17 |