Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11198589 | Elevator system including a protective hoistway liner assembly | George Scott Copeland, Patricia Derwinski, Richard K. Pulling | 2021-12-14 |
| 10997873 | Ride quality elevator simulator | — | 2021-05-04 |