Issued Patents 2019
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10450162 | Electromagnetic brake control circuitry for elevator application | Amir Lotfi, Steven M. Millett | 2019-10-22 |
| 10399820 | Elevator tension member stiffness estimation and monitoring | Randall Keith Roberts, David Wayne Mckee, Richard L. Hollowell | 2019-09-03 |