Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850033 | Method of and control arrangement for selecting a control channel by a mobile radio station | Alfons Eizenhofer | 1989-07-18 |
| 4815073 | Accessing of transmission channels of a communication system | Christoph Grauel | 1989-03-21 |