Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4603378 | Inverter circuit with a control circuit for leading transistors more effectively into a turned-off state | — | 1986-07-29 |
| 4553070 | Electronic ballast for a discharge lamp | Martti Sairanen | 1985-11-12 |
| 4492897 | Means for limiting and controlling the current of a discharge lamp | Martti Sairanen | 1985-01-08 |
| 4424959 | Brickwork construction | Frans H. Tuovinen, Pentti O. Hokkanen, Aimo Nurminen, Lauri A. Mustikka | 1984-01-10 |