Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D333276 | Surveying instrument | — | 1993-02-16 |
| D333313 | Magnifying glass | Joachim Hornschu, Wilhelm Schmidt | 1993-02-16 |
| 4415250 | Focusing system for long focal length objectives | Dieter Rossmann, Christian Ludwig | 1983-11-15 |
| RE30665 | Binocular telescope | Erwin Altenheiner, Joachim Hornschu, Walter Jachan, Artur Jung | 1981-07-07 |