Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4893491 | Apparatus for forming coil springs | Norifumi Abiru, Eiji Ohbayashi | 1990-01-16 |
| 4680950 | Method of and an apparatus for forming tension springs with German type hooks | Norifumi Abiru, Eiji Ohbayashi | 1987-07-21 |
| 4296621 | Machines for forming coiled springs | Yasuyuki Takahata | 1981-10-27 |