Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829211 | Method of manufacturing a color display tube having a magnetic quadrupole post-focusing mask and a color display tube made by the method | Johannes T. C. Van Roosmalen, Jacob Koorneef, Matthijs J. Baan Hofman, Johannes T. Klomp | 1989-05-09 |
| 4758762 | Cathode ray tube having a magnetic focusing lens | Aart A. Van Gorkum, Martinus H. L. M. Van Den Broek | 1988-07-19 |
| 4614501 | Method of manufacturing a color cathode-ray tube comprising a magnetic quadrupole post-focusing mask and device for carrying out the method | Jacob Koorneef, Paulus J. J. M. van der Heijden | 1986-09-30 |