Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5934791 | Electric lamp | Petrus J.M. Fransen, Winand H. A. M. Friederichs, Petrus H. Antonis | 1999-08-10 |
| 5903109 | Electrodeless low-pressure discharge lamp with specific electrical conductor clamping means | Petrus J.M. Fransen, Winand H. A. M. Friederichs, Petrus H. Antonis | 1999-05-11 |
| 5804911 | Electrodeless low-pressure discharge lamp | Petrus J.M. Fransen, Winand H. A. M. Friederichs, Petrus H. Antonis | 1998-09-08 |
| 5594295 | High pressure discharge lamp with discharge vessel centered with clamping plates | Johannes A. A. M. Van Heeswijk, Ronald Albert Plantinga | 1997-01-14 |
| 5227690 | Capped electric lamp | — | 1993-07-13 |
| 5211472 | Electric lamp and dismantling tool for same | Winand H. A. M. Friederichs | 1993-05-18 |
| 5130912 | Electrodeless low-pressure discharge lamp | Winand H. A. M. Friederichs | 1992-07-14 |