Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5889662 | Method and apparatus for reducing harmonics mains-power-supply perturbations of a self-commutated multilevel inventor | Frank Schettler | 1999-03-30 |
| 5684389 | Switch-off method for a three-phase reactive power compensator with two thyristor switches | Frank Schettler | 1997-11-04 |