Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4893491 | Apparatus for forming coil springs | Yozo Ohdai, Norifumi Abiru | 1990-01-16 |
| 4680950 | Method of and an apparatus for forming tension springs with German type hooks | Yozo Ohdai, Norifumi Abiru | 1987-07-21 |