Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5301773 | Positive terminal overspeed protection by rail grabbing | Eric K. Jamieson, Young S. Yoo, Rudi Steger | 1994-04-12 |
| 5274203 | """Smart"" position transducer system for elevators" | Clement A. Skalski | 1993-12-28 |
| 4594570 | Elevator control | George C. Tweed, Jr. | 1986-06-10 |