Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5949322 | Switch protecting against increased temperatures | Udo Witteck | 1999-09-07 |
| 5309131 | Thermal switch | Peter Hofsass, by Henrik Peter Hofsass, legal representative, by Carola Rika Hofsass, legal representative, by Benjamin Michael Hofsass, legal representative, Guenter Kruck | 1994-05-03 |
| 4778958 | Material for electric contacts having arc-quenching properties | Ursula Mayer, Roland Michal | 1988-10-18 |
| 4644118 | Electric power circuit breaker | Bruno Gengenbach, Roland Michal | 1987-02-17 |