Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5694180 | Projection system for projecting a color video picture and transformation optical system for same | Christhard Deter, Gunther Elster, Rolf Ruder, Wolfgang Holota | 1997-12-02 |