Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7112907 | Flux modifier for a permanent magnet brush-type motor using wound field coils combined with permanent magnets | Andrew Lakerdas, Attila Simofi-Ilyes, John Makaran, Corneliu Dragoi, Peter A. Kershaw | 2006-09-26 |
| 7105969 | Two speed electric motor with link wound dual-commutator and dual-armature winding | Attila Simofi-Ilyes, Andrew Lakerdas, Stefan Smorowski | 2006-09-12 |
| 6995490 | Flux modifier for a permanent magnet brush-type motor using wound field coils combined with permanent magnets | Andrew Lakerdas, Attila Simofi-Ilyes, John Makaran, Corneliu Dragoi, Peter A. Kershaw | 2006-02-07 |
| 6597135 | Combination of resistor and PWM electronic device to control speed of a permanent magnet DC motor | Andrew P. Smith | 2003-07-22 |
| 6590356 | Combination of resistor and PWM electronic device to control speed of a permanent magnet DC motor | Andrew P. Smith | 2003-07-08 |
| 6439855 | Direct current electric motor which eliminates outer case and places brushes and chokes in space efficient locations | Andrew Lakerdas, Andrew P. Smith | 2002-08-27 |