Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4236791 | Liquid crystal illuminator having ellipoidal light guide | Hans Krueger | 1980-12-02 |
| 4184153 | Display apparatus having a passive electro-optical display | — | 1980-01-15 |