Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6688971 | Chopper arrangement | Martin Buermann, Walter Hirsch, Adolf Belter, Gerd Bernhardt, Andre Heinrich | 2004-02-10 |
| 6688972 | Combine with chopper arrangement | Martin Buermann, Gerd Bernhardt, Andre Heinrich | 2004-02-10 |