Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825128 | Compact discharge lamp with conductive coating capacitvely coupled to high frequency supply | — | 1989-04-25 |
| 4783612 | Low-pressure sodium vapor discharge lamp with protective glass layer on electrode lead-throughs | — | 1988-11-08 |
| 4636691 | Arrangement including a metal vapor discharge tube provided with at least two internal electrodes | Rolf De Man, Jan de Ridder, Jozef I. C. Peeters | 1987-01-13 |
| 4441045 | Low-pressure sodium vapor discharge lamp | — | 1984-04-03 |
| 4401693 | Method of manufacturing a heat-reflecting filter | Gunter Frank, Heiner Kostlin, Ronald J. Campbell | 1983-08-30 |