Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6160693 | Short circuit protection for a semiconductor switch | — | 2000-12-12 |
| 5034660 | Method of and apparatus for supplying high frequency alternating current to a fluorescence lamp | — | 1991-07-23 |
| 4719390 | Electronic mains connection device for a gas discharge lamp | — | 1988-01-12 |
| 4553070 | Electronic ballast for a discharge lamp | Matti Virta | 1985-11-12 |
| 4492897 | Means for limiting and controlling the current of a discharge lamp | Matti Virta | 1985-01-08 |
| 4456855 | Intensity regulator, especially a light regulator | — | 1984-06-26 |