Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7247955 | PWM power supplies using controlled feedback timing and methods of operating same | John G. Tracy, Frederick Tassitino, Hans-Erik Pfitzer, Rennie Bobb | 2007-07-24 |
| 6687100 | Method of dissipating energy from a contactor coil | Roger Alan Plemmons | 2004-02-03 |
| 6606233 | Method and apparatus for immunizing a contactor circuit from the adverse effects of a derived power supply | Roger Alan Plemmons | 2003-08-12 |
| 6556413 | Method of providing electrical current to a contactor circuit | Roger Alan Plemmons | 2003-04-29 |