Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5498930 | Method of dimensioning and operating a low pressure discharge lamp | Sigurd Kohler, Armin Eich | 1996-03-12 |
| 4814663 | Fluorescent lamp for unipolar mode of operation | Armin Eich, Sigurd Kohler | 1989-03-21 |
| 4743799 | Low pressure arc discharge light source unit | — | 1988-05-10 |