Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7884549 | Gas-discharge lamp | Manfred Westemeyer, Godfried Maria Manders, Bram Visser | 2011-02-08 |
| 6270237 | Electric lamp with an anti-reflecting layer | — | 2001-08-07 |
| 5646471 | Capped high-pressure discharge lamp | Helmut Tiesler-Wittig | 1997-07-08 |
| 5619102 | Electric lamp | — | 1997-04-08 |