Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7391146 | Halogen incandescent lamp | Joseph Franciscus Raymond Eijsermans, Wilfried L. Kohlmann | 2008-06-24 |
| 4755710 | High-pressure sodium discharge lamp having reduced lamp voltage increase | Gerardus M. J. F. Luijks | 1988-07-05 |
| 4721886 | High-pressure discharge lamp with precision end seal structure | Joris J. C. Oomen, Jan W. Rouwendal | 1988-01-26 |
| 4560903 | High pressure discharge lamp | Andreas P. E. Sneijers, Roger J. Q. Van den Plas | 1985-12-24 |
| 4277715 | Electric gas discharge lamp | Bart van der Leeuw, Nicolaas F. van Elderen | 1981-07-07 |