Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5193214 | Vehicular radio receiver with standard traffic problem database | Claus Mardus, Ralf Duckeck | 1993-03-09 |
| 5065452 | Digital traffic news evaluation method | Ralf Duckeck | 1991-11-12 |
| 5020143 | Vehicular radio receiver with stored detour data | Ralf Duckeck | 1991-05-28 |
| 4862513 | Radio receiver with two different traffic information decoders | — | 1989-08-29 |
| 4584708 | Communication system, and transmitter therefor, including special announcement recognition | Norbert Eilers | 1986-04-22 |
| 4515994 | Combination electronic road guidance and communication system for vehicles | Gunter Bolle, Bernd Eschke | 1985-05-07 |
| 4476581 | FM Receiver with subcarrier decoding circuit | — | 1984-10-09 |
| 4450589 | FM Receiver for reception of special announcements and general programs | Norbert Eilers | 1984-05-22 |
| 4435843 | FM Receiver for general programs and special announcements | Norbert Eilers | 1984-03-06 |
| 4282545 | Method and apparatus for playing back color video records through television receiver operating at a different color standard | — | 1981-08-04 |
| 4280149 | Equipment for preventing gaps between previously recorded and newly recorded information on an information carrier | — | 1981-07-21 |
| 4251797 | Vehicular direction guidance system, particularly for interchange of information between road mounted units and vehicle mounted equipment | Bernd Eschke | 1981-02-17 |