Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8454465 | Toothed chain with optimized chain joint and enlarged external flank angle | Andreas Bongard, Lutz Welke | 2013-06-04 |
| 8113975 | Chain wheel and timing chain drive for the compensation of dynamic loads | Andreas Ritz, Lutz Welke | 2012-02-14 |
| 7186195 | Chain-tensioner with mechanical locking | Wolfram Hellmich | 2007-03-06 |