Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5008591 | X-ray image intensifier tube comprising a selective filter | Johnny W. Van Der Velden, Theodorus F. van Bergen, August L. H. Simons, Johannes K. E. Colditz, Franciscus M. Dreesen | 1991-04-16 |
| 4842894 | Method of vapor depositing a luminescent layer on the screen of an x-ray image intensifier tube | August L. H. Simons | 1989-06-27 |