Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10728964 | Color temperature control of flash units | Marcel Griessmann, Martin Buser, Urs Zeltner | 2020-07-28 |
| 5118995 | Lighting and flash device | — | 1992-06-02 |
| 4853600 | Flash apparatus with color temperature control | Urs Zeltner | 1989-08-01 |
| 4464708 | Lighting fixture | Armin Nussli | 1984-08-07 |