Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855826 | Zone plate signal generator | Hans-Peter Richter | 1989-08-08 |
| 4833524 | System for two-dimensional blending of transitions between a color video picture signal and a background color signal | — | 1989-05-23 |