Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11691847 | Elevator travel blocking apparatus | Russell Duke, Alan Parker | 2023-07-04 |
| D868128 | Lubricant director for an elevator guide rail | Russell Duke | 2019-11-26 |
| D856388 | Lubricant director for an elevator guide rail | Russell Duke | 2019-08-13 |