Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5818130 | Method and arrangement for appropriately polarity recognition and switchover of an output stage | Ernst Gass, Sorin Fericean, Bernd Fingerle | 1998-10-06 |
| 5408132 | Proximity switch operating in a non-contacting manner | Sorin Fericean, Hans-Werner Plank | 1995-04-18 |
| 4893027 | Proximity switch insensitive to interference fields | Reinhard Stumpe | 1990-01-09 |
| 4780788 | Two-wire switch with a power transistor | Peter Dolderer | 1988-10-25 |
| 4745300 | Two-wire switch | Peter Dolderer | 1988-05-17 |
| 4652819 | Proximity switch with continuously operable test circuit responsive to bipolar double pulses | — | 1987-03-24 |
| 4492925 | Testing and evaluating circuit for proximity switches in machine control means | Hans Langheinrich | 1985-01-08 |
| 4433309 | Proximity switch with built-in test circuit | Rolf Hermle, Hans Langheinrich | 1984-02-21 |