Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11639284 | Wedge brake elevator safety system | — | 2023-05-02 |
| 6935807 | Device for maintaining tension on lift cables | — | 2005-08-30 |
| 6756558 | High current, low impedance resistance welding device | Thomas Salzer, Dennis K. Briefer | 2004-06-29 |