Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851733 | Electric lamp having a metal foil with a convexly and concavely curved surface | Godefridus H. C. Heijnen | 1989-07-25 |
| 4734614 | Electric lamp provided with an interference filter | — | 1988-03-29 |
| 4455998 | Solar collector | Wiggert Kroontje | 1984-06-26 |
| 4314175 | Method vapor discharge lamp having specific range of xenon pressures | Cornelis A. J. Jacobs, Johannes A. T. Schellen | 1982-02-02 |
| 4305017 | Halogen incandescent lamp | Adriaan J. De Ridder | 1981-12-08 |
| 4260934 | Electric device provided with a switch which is designed as a discharge tube | Robertus De Vaan, Cornelis A. J. Jacobs, Herman Smulders | 1981-04-07 |
| 4203049 | Electric lamp with hydrogen getter and hydrogen getter | — | 1980-05-13 |