Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5017825 | Filter for colored electric lamp | Cornelis Mulder, Ernest O. W. Van Der Stelt | 1991-05-21 |
| 4851733 | Electric lamp having a metal foil with a convexly and concavely curved surface | Gijsbert Kuus | 1989-07-25 |
| 4248633 | Universal copper-plating solution | Arian Molenaar | 1981-02-03 |