Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816798 | Electrical protection switch | Peter Hilfiker, Hans Luethy | 1989-03-28 |
| 4808952 | Magnetic trigger for a selectively operative switch | Jorg Berner, Markus Anliker, Werner Breer | 1989-02-28 |