Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10931279 | Battery-operated electronic switching device having a power-free stand-by mode | — | 2021-02-23 |
| 10145943 | Method for operating an optical proximity switch in accordance with the time-of-flight principle | Hartmut Bielefeldt, Eduard Gjabri | 2018-12-04 |
| 7176443 | Optoelectronic sensor and process for detection of an object in a monitored area | Holger Lautenschlager, Jaromir Palata, Martin Buck, Hartmut Bielefeldt | 2007-02-13 |
| 5668300 | Calibration process for setting the switching point of a sensor | Dieter Krökel | 1997-09-16 |