Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5654625 | Switching circuit for a reactive power compensation device having synchronized on and off switching | Stefan Freitag | 1997-08-05 |
| 5642025 | Process and apparatus for the reduction of surges in switch-on current in the operation of a rotary current load | Stefan Freitag | 1997-06-24 |