Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6526368 | Elevator car position sensing system | Steven D. Coste, Jason S. Stone, Julian H. Shull, Kim Ngoc Trinh, William G. Edgar +1 more | 2003-02-25 |
| 6128116 | Retroreflective elevator hoistway position sensor | August J. Dobler, Julian H. Shull | 2000-10-03 |