Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5677903 | Multi-layer information storage system with improved aberration correction | Derk Visser, Peter Coops, Jacobus P. J. Heemskerk | 1997-10-14 |
| 5623187 | Controller for a gas discharge lamp with variable inverter frequency and with lamp power and bus voltage control | Paulo Caldeira, Lawrence Bourdillon, Jinrong Qian | 1997-04-22 |