Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9708157 | Controlling speed of an elevator using a speed reducing switch and governor | Barry G. Blackaby | 2017-07-18 |
| 9457987 | Stop sequencing for braking device | — | 2016-10-04 |
| 4766653 | Method and tool for assembling power semiconductor and heat sink | — | 1988-08-30 |