Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6028660 | Illumination unit for an optical apparatus | Hans Van Der Laan, Johannes Catharinus Hubertus Mulkens | 2000-02-22 |
| 5508528 | Illumination unit having a facility for preventing contamination of optical components, and photolithographic apparatus including such an illumination unit | Johannes Catharinus Hubertus Mulkens, Nicolaas C. J. A. Van Hijningen | 1996-04-16 |