Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7032714 | Automatic return mechanism for elevator escape device | — | 2006-04-25 |
| 6966409 | Backup power device for elevator | — | 2005-11-22 |
| 6739431 | Elevator escape device | — | 2004-05-25 |
| 6557670 | Double brake protection device for elevator | — | 2003-05-06 |
| 6516921 | Protective means against inertial slip of elevator cab during brake release in an emergency | — | 2003-02-11 |
| 6464043 | Elevator emergency escape device | — | 2002-10-15 |