Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6695098 | Self-locking wrap termination for tension member | Mark F. Orelup | 2004-02-24 |
| 6186281 | Remote storage and reset of elevator overspeed switch | Chris Pietrzykowski, Gerard Sirigu, Richard N. Fargo, Helmut Schroder-Brumloop, Gurumurthi Ravishankar | 2001-02-13 |
| 5881845 | Elevator rope protective device | Hugh J. O'Donnell, Eric G. Olsen | 1999-03-16 |
| 5606154 | Timed advertising in elevators and other shuttles | Lloyd D. Doigan | 1997-02-25 |