Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11905721 | Protective platform assembly for use during elevator installation | Kurt J. Frei | 2024-02-20 |
| 5161668 | Guide mechanism for passenger conveyors | Thomas Nurnberg, Richard Dean Rohret | 1992-11-10 |