Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4623815 | Halogen incandescent-type reflector lamp, particularly for display illumination | Friedrich Ziegler, Franz-Josef Bierbauer | 1986-11-18 |
| 4605994 | Flash lamp | — | 1986-08-12 |
| 4564783 | Halogen incandescent lamp-and-reflector unit | Friedrich Ziegler | 1986-01-14 |
| 4470103 | Combined direct-indirect lighting photographic scene illumination device | — | 1984-09-04 |
| 4298909 | Photoflash reflector configuration | — | 1981-11-03 |
| 4249102 | Halogen-metal vapor discharge lamp | Alexander Dobrusskin, Horst Krense | 1981-02-03 |