Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6699121 | Comminuting device in an agricultural harvesting machine | Bodo Kühn, Franz Heidjann | 2004-03-02 |
| 6467206 | Multipurpose advertisement device | — | 2002-10-22 |
| 5184822 | Three-dimensional puzzle | Erno Rubik | 1993-02-09 |