Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5680504 | Apparatus and method for storing and reproducing digital data | — | 1997-10-21 |
| 5675633 | Digital telephone answering set | Jurgen Sienel | 1997-10-07 |
| 5652753 | Digital telephone | Peter Fesseler | 1997-07-29 |