Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5986419 | Quadrature axis winding for sensorless rotor angular position control of single phase permanent magnet motor | William R. Archer, Roger Carlos Becerra, Brian L. Beifus, Mark A. Brattoli, David M. Erdman +5 more | 1999-11-16 |
| 5838127 | Single phase motor for laundering apparatus | Glen C. Young, Brian L. Beifus, Robert K. Hollenbeck, Austars Raymond Schnore, Jr., Charles Michael Stephens +2 more | 1998-11-17 |
| 5796194 | Quadrature axis winding for sensorless rotor angular position control of single phase permanent magnet motor | William R. Archer, Roger Carlos Becerra, Brian L. Beifus, Mark A. Brattoli, David M. Erdman +5 more | 1998-08-18 |
| 5696430 | Circuit, motor, and method generating a signal representing back EMF in an energized motor winding | David M. Erdman | 1997-12-09 |