Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6050557 | Coiled disk spring | — | 2000-04-18 |
| 5803444 | Coiled wave spring and production method thereof | Minoru Shibuya, Minoru Sawayama, Seiichi Inukai | 1998-09-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6050557 | Coiled disk spring | — | 2000-04-18 |
| 5803444 | Coiled wave spring and production method thereof | Minoru Shibuya, Minoru Sawayama, Seiichi Inukai | 1998-09-08 |