Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5933114 | Process and apparatus for locating mobile stations | Reinhold Mertens | 1999-08-03 |
| 5506837 | Cellular radio communication system which is selectively convertible into a trunked radio communication system for group calls | Michael Sollner | 1996-04-09 |
| 5008883 | Communication system | Georg Von Harten | 1991-04-16 |
| 4850033 | Method of and control arrangement for selecting a control channel by a mobile radio station | Werner Schmidt | 1989-07-18 |
| 4763322 | Digital radio transmission system with variable duration of the time slots in the time-division multiplex frame | — | 1988-08-09 |
| 4754453 | Digital radio transmission system with a connection-accompanying organization channel in the time-division multiplex frame | — | 1988-06-28 |
| 4688210 | Method of and arrangement for synchronizing the receiver arrangements in a digital multiplex transmission system | Christoph Grauel | 1987-08-18 |