Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6566813 | Overvoltage protection device with concentric arcing horns | Eberhard Lehmann, Joachim Schimanski, Jörg Tews, Martin Wetter | 2003-05-20 |
| 6529360 | Overvoltage protection element system | Gerd Kracht, Eberhard Lehmann, Joachim Schimanski, Martin Wetter | 2003-03-04 |
| 6390730 | Protective elements, devices comprising said elements and method for protecting a zone against floods and avalanches | — | 2002-05-21 |
| 6392862 | Overvoltage protection element system | Gerd Kracht, Eberhard Lehmann, Joachim Schimanski, Martin Wetter | 2002-05-21 |
| 6111740 | Overvoltage protection system and overvoltage protection element for an overvoltage protection system | Volker Danowsky, Eberhard Lehmann, Joachim Schimanski, Joachim Wosgien | 2000-08-29 |
| 5754385 | Overvoltage protection element | Holger Altmaier, Eberhard Lehmann | 1998-05-19 |
| 5604400 | Overvoltage protection element | Holger Altmaier, Eberhard Lehmann, Gerhard Oertel | 1997-02-18 |
| 4303814 | Gas-blast power switch | — | 1981-12-01 |