Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648867 | Lens system and photographic copier for rotating images | Walter Hellriegel | 1997-07-15 |
| 5625488 | Telecentric relay lens system | Christa Dietzsch | 1997-04-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648867 | Lens system and photographic copier for rotating images | Walter Hellriegel | 1997-07-15 |
| 5625488 | Telecentric relay lens system | Christa Dietzsch | 1997-04-29 |