Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5907216 | Low-pressure mercury vapour discharge lamp | Franciscus A. S. Ligthart, Willem Johannes Van Den Bogert, Renate Kaiser | 1999-05-25 |
| 5751110 | Electrodeless low-pressure discharge lamp | Antonius J. Spaapen, Theodorus J.M.J. Van Gennip | 1998-05-12 |