Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6592064 | Self-locking belt roller having two retraction force limiting elements | Günter Clute, Klaus-Peter Singer | 2003-07-15 |
| 6267314 | Belt roller with damped force limiter | Klaus-Peter Singer, Günter Clute | 2001-07-31 |
| 6105894 | Belt roller with damped force limiter | Klaus-Peter Singer, Günter Clute | 2000-08-22 |