Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6639342 | Electric lamp | Johannes A. F. Peek, Wolfgang Doetter | 2003-10-28 |
| 6570302 | Electric lamp with light-absorbing medium and interference film | Mathias Hubertus Johannes Van Rijswick, Hendrik Adrianus Van Sprang, Gerhard Hebbinghaus | 2003-05-27 |