Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D332106 | Pair of binoculars | Alfred Hengst, Heinz Keiner, H. Peter Farnung | 1992-12-29 |
| D332107 | Pair of binoculars | Alfred Hengst, Heinz Keiner, H. Peter Farnung | 1992-12-29 |
| D292412 | Binocular | Alfred Hengst, Hans-Kurt Uellenberg | 1987-10-20 |
| D287369 | Binocular | Alfred Hengst, Hans-Kurt Uellenberg | 1986-12-23 |
| D276351 | Inverted image microscope | Hans-Kurt Uellenberg | 1984-11-13 |
| D272362 | Binocular | Alfred Hengst, Hans-Kurt Uellenberg, Heinz Keiner | 1984-01-24 |
| D272361 | Binocular | Alfred Hengst, Hans-Kurt Uellenberg, Heinz Keiner | 1984-01-24 |
| D267884 | Mirror reflex camera | Hans-Kurt Uellenberg | 1983-02-08 |
| D263057 | Microscope | Hans-Kurt Uellenberg | 1982-02-16 |
| 4283111 | Microscope stand with protected turret | Karl Wieber, Winfried Kraft, Robert Lisfeld | 1981-08-11 |