Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888524 | Circuit for operating gas discharge lamps with a periodically alternating lamp current | Hans G. Ganser, Hans Peter Stormberg | 1989-12-19 |
| 4839560 | Heatable electrode for high-pressure gas discharge lamps | Hans G. Ganser, Hans Peter Stormberg | 1989-06-13 |
| 4816721 | Circuit arrangement for operating a high-pressure gas discharge lamp | Hans G. Ganser, Hans Peter Stormberg | 1989-03-28 |
| 4812736 | Circuit arrangement for operating high-pressure gas discharge lamps | Manfred Albach, Hans Peter Stormberg, Armin Wegener | 1989-03-14 |
| 4795943 | High-pressure sodium vapor discharge lamp | Petrus H. Antonis, Lodewijk H. M. Meessen | 1989-01-03 |