Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7225912 | Escalator wheel monitor | H. Eugene Toennisson, Kyle A. Apperson, Dustin J. Charville, John D. Shupe, Masashi Tsuchihata | 2007-06-05 |
| 6508332 | Elevator car door locking and unlocking mechanism | Richard L. Fahl, Mark H. Bayyari, Takeshi Sugimoto | 2003-01-21 |