Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4680531 | Method for attenuating at least one electric harmonic of the system frequency in a multi-phase alternating-current system | Herbert Stemmler | 1987-07-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4680531 | Method for attenuating at least one electric harmonic of the system frequency in a multi-phase alternating-current system | Herbert Stemmler | 1987-07-14 |