Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671114 | Gas-filled overvoltage diverter | Wolfgang Däumer | 1997-09-23 |
| 5633777 | Gas-filled, three-electrode overvoltage surge arrester for large switching capacities | Gerhard Lange | 1997-05-27 |