Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6701277 | Elevator car position sensing system | Steven D. Coste, Jason S. Stone, Julian H. Shull Jr., Richard A. Schafer, Kim Ngoc Trinh +1 more | 2004-03-02 |
| 6526368 | Elevator car position sensing system | Steven D. Coste, Jason S. Stone, Julian H. Shull, D. Richard Schafer, Kim Ngoc Trinh +1 more | 2003-02-25 |