Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D292412 | Binocular | Heinrich Janke, Alfred Hengst | 1987-10-20 |
| D287369 | Binocular | Heinrich Janke, Alfred Hengst | 1986-12-23 |
| D282422 | Work table having adjustable top sections | Wolfgang M. Egger, Erich Lenhart | 1986-02-04 |
| D276351 | Inverted image microscope | Heinrich Janke | 1984-11-13 |
| D272362 | Binocular | Alfred Hengst, Heinrich Janke, Heinz Keiner | 1984-01-24 |
| D272361 | Binocular | Alfred Hengst, Heinrich Janke, Heinz Keiner | 1984-01-24 |
| D267884 | Mirror reflex camera | Heinrich Janke | 1983-02-08 |
| D263057 | Microscope | Heinrich Janke | 1982-02-16 |