Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875475 | Device for treating a bone | Pierre Comte, Hans Schurch | 1989-10-24 |
| 4825011 | Method of preparing substituted dihydroxy-benzenes | Karl-Heinz Drauz, Axel Kleeman, Gunter Prescher | 1989-04-25 |
| 4803976 | Sighting instrument | Robert Frigg, Paul Gisin, Stephan M. Perren, Urs Jenny | 1989-02-14 |