Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9371210 | Elevator safety system having multiple buses | Shari R. Parillo, Steven D. Coste, Robert Mazzamauro, Ronnie E. Thebeau, Leslie C. Watterson +1 more | 2016-06-21 |
| 5721403 | Selective circuit bypass for elevator system | Richard G. Smith | 1998-02-24 |