Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5189268 | Elevator with linear motor drive assembly | Ernest P. Gagnon | 1993-02-23 |
| 5062501 | Elevator with linear motor counterweight assembly | Ernest P. Gagnon | 1991-11-05 |
| 4949815 | Sheave array of a self propelled elevator using a linear motor on the counterweight | — | 1990-08-21 |
| 4402386 | Self-powered elevator using a linear electric motor as counterweight | Rene Ficheux | 1983-09-06 |