Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4598344 | Elongated lamp, particularly fluorescent lamp | — | 1986-07-01 |
| 4410834 | Circular fluorescent lamp with improved housing containing ballast and starting device | Dieter Witte, Alfons Jendrewski | 1983-10-18 |