Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7678293 | Coated fluorescent substance, light emitting device comprising said substance and a method for producing said substance | Bert Braune, Torsten Fries, Martin Zachau, Franz Zwaschka | 2010-03-16 |
| 6060548 | Socket base filler for electric lamps | Johann Schoenwetter, Armin Wilhelm | 2000-05-09 |