Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6272820 | Sugar cane harvester | Hillrich Otten | 2001-08-14 |
| 5953891 | Cleaning method of sugarcane harvester, and sugarcane harvester operating according to it | Frank Groger, Hillrich Otten | 1999-09-21 |
| 4471602 | Self-propelled sugar cane harvester | — | 1984-09-18 |
| 4443999 | Chopping cutter of a sugar cane harvester | — | 1984-04-24 |