Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9932205 | Asymmetric and steered sheaves for twisted multi-belt elevator systems | Amir Lotfi | 2018-04-03 |
| 9643819 | Asymmetric and steered sheaves for twisted multi-belt elevator systems | Amir Lotfi | 2017-05-09 |