Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806820 | Mask-frame assembly and method of manufacturing the same | Dietrich Berner, Rolf Reidinger | 1989-02-21 |
| 4288512 | Method of manufacturing luminescent screens for color picture tubes | Bruno Fischer | 1981-09-08 |