Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D493476 | Multi-bladed thicket knife | Norbert Apfel | 2004-07-27 |
| 6062177 | Hand-guided working tool such as a trimmer, motor chainsaw, or cutter with an internal combustion engine with an air intake blower | Georg Becker, Hans-Georg Wiedmann | 2000-05-16 |
| 6000519 | Centrifugal clutch | Georg Becker, Hans-Georg Wiedmann | 1999-12-14 |
| 5036648 | Cutterhead for a vegetation cutter apparatus | Joachim Hoffmann, Joachim Kottke | 1991-08-06 |
| 4893410 | Cutterhead for a vegetation cutter | Joachim Hoffmann, Gerhard Zerrer | 1990-01-16 |
| 4866846 | Cutterhead for a vegetation cutter | Joachim Hoffmann, Josef Karner, Gerhard Zerrer | 1989-09-19 |