Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |