Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D304502 | Compact fluorescent lamp | Michael Kappler | 1989-11-07 |
| 4508991 | Halogen cycle incandescent lamp and method for the protection of its inner surface | Ewald Wurster | 1985-04-02 |