Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10457522 | Limit switch system including first limit device and second limit device | James O'Neal Creel, Jr. | 2019-10-29 |
| 10252883 | Elevator hoistway access safety | Kenneth P. Litteral | 2019-04-09 |