Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11078048 | Elevator sheave cleaner | Ethan Kent Grainger, Ronnie D. Forrest, Jr. | 2021-08-03 |
| 10647546 | Hydraulically activated shutoff valve for a hydraulic elevator system | Kevin Shepherd | 2020-05-12 |
| 10457522 | Limit switch system including first limit device and second limit device | John F. Kleine, JR. | 2019-10-29 |
| 7431776 | Slag-removal system and method in a cutting table | Rufus Randolph Brown, II | 2008-10-07 |