Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5159239 | Electric lamp with SiO.sub.2 vessel and seal therefor | Karel M. Van Der Waarde | 1992-10-27 |
| 5077505 | Electric lamp and seal structure therefor | Adrianus J. A. Vermeulen | 1991-12-31 |
| 4703672 | Method of manufacturing a drawing die | — | 1987-11-03 |