Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804858 | Power supply circuit for a diode adapted to emit light in dependence of the prevailing surrounding light | Lars-Ola Nystrom, Sixten Lewenhaupt | 1989-02-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804858 | Power supply circuit for a diode adapted to emit light in dependence of the prevailing surrounding light | Lars-Ola Nystrom, Sixten Lewenhaupt | 1989-02-14 |