Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8915552 | Brush head and method and tool for producing same | Andreas Birk, Ulrich Pfeifer, Klaus Amsel, Guenther Alschweig | 2014-12-23 |
| 8845034 | Brush head and method and tool for producing same | Andreas Birk, Ulrich Pfeifer, Klaus Amsel, Guenther Alschweig | 2014-09-30 |