Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4969055 | Method for recording and/or reproducing digitally coded signals with interframe and interframe coding | Werner Keesen, Jean-Yves Catros, Christian Richard | 1990-11-06 |
| 4930025 | Arrangement for indicating angular position of headwheel disk in a tape recorder | Heinz-Werner Keesen | 1990-05-29 |
| 4728949 | Remote control device for controlling various functions of one or more appliances | Hans-Joachim Platte, Walter Vössing | 1988-03-01 |
| 4694336 | Digital data transmission method | Heinz-Werner Keesen, Hartmut Peters | 1987-09-15 |
| 4590531 | System for compensating signal interference in a PCM audio transmission | Hans-Joachim Platte, Walter Voessing, Ernst Schroder | 1986-05-20 |