Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9491572 | Method and apparatus for message processing to locate network devices | Heinrich BARTELS | 2016-11-08 |
| 8737949 | Method and arrangement for operating a mobile battery-operated personal emergency signal device | Volkmar Bilke | 2014-05-27 |
| 4811336 | Switching arrangement for communication of digital signals, in particular PCM signals | Martin Backhaus, Hartmut Lubcke | 1989-03-07 |