Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7561000 | Oscillator circuit for a sensor | Melnrad Sauter | 2009-07-14 |
| 7439638 | Electronic proximity switching device | Manfred Strobel | 2008-10-21 |
| 6356202 | Circuit for monitoring trouble-free state and/or detecting incorrect state of an installation | Reinhard Albrich, Karl Herrmann, Manfred Strobel | 2002-03-12 |
| 5977662 | Electronic switching device and circuits with a plurality of such switching devices | Karl Herrmann, Manfred Strobel | 1999-11-02 |
| 5825233 | Electronic proximity switching device | Guntram Rundel | 1998-10-20 |
| 5367198 | Proximity detector with error-preventing ambient condition compensation | Johannes Buergel, Andreas Schiff, Klaus-Peter Westrup | 1994-11-22 |
| 5229653 | Electronic switch apparatus | — | 1993-07-20 |
| 5066954 | Analog to digital converter with reference voltage control and analog style display | Johannes Burgel | 1991-11-19 |
| 4918326 | Electronic switchgear, preferably operating contact-free | — | 1990-04-17 |
| 4879474 | Contact-free operating electronic switchgear | — | 1989-11-07 |
| 4551637 | Electronic monitoring system with direct-current power supply | Robert Buck | 1985-11-05 |
| 4543497 | Electronic monitoring system with selective signal inversion | Robert Buck | 1985-09-24 |