Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6483271 | Motor drive parameters | Ronnie E. Thebeau, Daryl J. Marvin, Christopher S. Czerwinski, Edward Piedra | 2002-11-19 |
| 5929400 | Self commissioning controller for field-oriented elevator motor/drive system | Roy S. Colby, Alberto Vecchiotti, Leslie Lamontagne, Ronnie E. Thebeau | 1999-07-27 |
| 5896954 | Automatic fine tuning of rotor time constant in field-oriented elevator motor drive | Roy S. Colby, Alberto Vecchiotti | 1999-04-27 |