Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D670990 | Manual sharpener for teeth of chain saws | Bernd Kruse | 2012-11-20 |
| 8291790 | Sharpening device for manually sharpening the cutting teeth of saw chains for chain saws | Bernd Kruse | 2012-10-23 |