Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4356392 | Optical imaging system provided with an opto-electronic detection system for determining a deviation between the image plane of the imaging system and a second plane on which an image is to be formed | Stefan Wittekoek | 1982-10-26 |
| 4334139 | Apparatus for writing patterns in a layer on a substrate by means of a beam of electrically charged particles | Stefan Wittekoek | 1982-06-08 |