Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4492925 | Testing and evaluating circuit for proximity switches in machine control means | Heinz Kammerer | 1985-01-08 |
| 4433309 | Proximity switch with built-in test circuit | Rolf Hermle, Heinz Kammerer | 1984-02-21 |