Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6720738 | Method and circuit arrangement for producing an ignition voltage for fluorescent lamps | Ferdinand Mertens | 2004-04-13 |
| 6525479 | Method and ballast for operating a lamp fitted with a fluorescent tube | Ferdinand Mertens | 2003-02-25 |