Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6223667 | Belt-loop sewing machine | Yasushi Ono, Yutaka Hirasawa | 2001-05-01 |
| 5640917 | Welt forming device, and fabric guide | Yutaka Hirasawa | 1997-06-24 |
| 4630951 | Ink ribbon and correction tape lifting mechanism for a typewriter | — | 1986-12-23 |