Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6578415 | Limit-level sensor and method of determining the undershooting or overshooting of an intended level of liquid in a container | Ralf Schimmel, Joachim Acht, Werner Wallrafen | 2003-06-17 |
| 6237411 | Limit-level sensor and method of determining the undershooting or overshooting of an intended level of liquid in a container | Ralf Schimmel, Joachim Acht, Werner Wallrafen | 2001-05-29 |