Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7677111 | Portable test lever for testing a tractive capacity and/or an acceleration behavior of a cable-operated lift | Martin Fiedler | 2010-03-16 |
| 7673522 | Force-reduced measuring method for traction drives, particularly friction pulley drives for elevators | Martin Fiedler | 2010-03-09 |