Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8212431 | Safety switching apparatus | Thomas Nitsche, Johannes Hopp, Rolf Dickhoff | 2012-07-03 |
| 7948121 | Safety switching apparatus | Thomas Nitsche, Johannes Hopp, Rolf Dickhoff | 2011-05-24 |
| 6825579 | Safety switching apparatus having a first and a second input switch and method of manufacturing the same | Gerhard Ehrlich | 2004-11-30 |