Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5278744 | Illumination device and luminaire for use therein | Jaak M. J. Geboers | 1994-01-11 |
| 5039909 | Electric lamp and holder for such a lamp | Werner Schlagheck, Josef Rothkranz | 1991-08-13 |
| 4584502 | Electric incandescent lamp | Volker Kuhnert | 1986-04-22 |