Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7129856 | Illuminated sign for traffic control and method for functional monitoring of such a sign | Bernhard Hering, Rudolf Schierjott | 2006-10-31 |
| 4656403 | Digital speed control circuit for a DC motor | — | 1987-04-07 |