Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6603649 | Electronic tripping device for a circuit breaker | Thomas Müller, Wolfgang Rohl, Holger Hochgraef | 2003-08-05 |
| 6279115 | Circuit arrangement for monitoring of an electric tripping device for low-voltage switches | Wolfgang Rohl | 2001-08-21 |
| 6233129 | Undervoltage circuit breaker with an electromagnet | Wolfgang Rohl | 2001-05-15 |
| 6150739 | Circuit configuration for supplying power to electronic tripping device | Wolfgang Rohl | 2000-11-21 |
| 6034859 | Power circuit-breaker with current transformers and data storage device | — | 2000-03-07 |
| 6005393 | Method of determining an earth-fault current | — | 1999-12-21 |
| 5859529 | Voltage transformer with increased electric strength | Wolfgang Rohl | 1999-01-12 |
| 4781061 | Process for monitoring the gas volume in an hydropneumatic accumulator and apparatus for carrying out the process | — | 1988-11-01 |
| 4209743 | Circuit arrangement for measuring currents at high potential | Bruno Muller, Werner Kohler | 1980-06-24 |