Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7967706 | Racket for ball games | Rob Cottey, Johan Kotze, Stefan Mohr, Claus Muller, Klaus Rambach +2 more | 2011-06-28 |
| 7572196 | Dampening device for a racket | Johan Kotze, Stefan Mohr | 2009-08-11 |
| 7556575 | Dampening device for a ball games racket | Herfried Lammer | 2009-07-07 |
| 7070525 | Racket for ball games | Herfried Lammer | 2006-07-04 |