Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D604909 | Callus remover | Udo Fierus | 2009-11-24 |
| 7229345 | Knife sharpener | Udo Fierus | 2007-06-12 |
| 6454642 | Device for sharpening knives, scissors or other cutting tools | Udo Fierus | 2002-09-24 |
| 5018310 | Knife sharpener | Udo Fierus | 1991-05-28 |