Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6923034 | Wire spring forming apparatus | — | 2005-08-02 |
| 5937685 | Method and apparatus for linear spring | Hiroshi Okubo | 1999-08-17 |
| 5269165 | Apparatus for making coiled springs | — | 1993-12-14 |
| 5182930 | Method for making coiled springs | — | 1993-02-02 |
| 5025648 | Coiled spring making apparatus | — | 1991-06-25 |
| 4594869 | Method and apparatus of manufacturing a coil spring | — | 1986-06-17 |
| 4542635 | Apparatus for manufacturing solid tension coil springs having attachment loops at both ends thereof | — | 1985-09-24 |