Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5523656 | High pressure discharge lamp operating circuit with light control during lamp run up | — | 1996-06-04 |
| 5448139 | Discharge lamp power control circuit with reduced light fluctuations during lamp run-up | Nicolaas H. G. Reijnders | 1995-09-05 |
| 5053680 | Switching device | — | 1991-10-01 |
| 4724360 | Circuit arrangement for operating a high-pressure discharge lamp | — | 1988-02-09 |
| 4645976 | Discharge lamp circuit with protected PTC resistor | — | 1987-02-24 |
| 4588924 | High efficiency converter for discharge lamps | Hilbert Palmers | 1986-05-13 |
| 4480300 | Control circuit for a DC-AC converter | — | 1984-10-30 |
| 4333127 | Electronic flashgun | Frederik H. Alkema | 1982-06-01 |
| 4327981 | Electronic flashgun | — | 1982-05-04 |
| 4256992 | Electric device for starting and feeding a metal vapor discharge lamp provided with a preheatable electrode | — | 1981-03-17 |