Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10049795 | Surge protection device, comprising at least one surge arrester and one thermally trippable switching device connected in series with the surge arrester | Helmut Hirschmann, Edmund Zäuner | 2018-08-14 |
| 10014098 | Surge protection device, comprising at least one surge arrester and one short-circuit switching device which is connected in parallel with the surge arrester, can be thermally tripped and is spring-pretensioned | Helmut Hirschmann, Edmund Zäuner | 2018-07-03 |