Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11198588 | Counterweight slack belt detection switch | Jeffrey Duvall, Jonathan Ashley Brothers | 2021-12-14 |
| 11198595 | Methods and apparatuses for installing elevator machines | Zachary William Evans, William E. Bowling, Andrew Turner Bottom, Andrew J. Taylor, Garret Stone | 2021-12-14 |
| 11059699 | Elevator sheave assembly | Jeffrey Duvall, William Delk | 2021-07-13 |