Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6417783 | Motor vehicle detector | Manfred Gabler, Elmar Reisinger, Erik Büchel | 2002-07-09 |
| 5007432 | Radiation detection method and apparatus | Hans J. Keller | 1991-04-16 |
| 4930864 | Domed segmented lens systems | Hans J. Keller | 1990-06-05 |