Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4317233 | Telephone subscriber station | Siegfried Schoen, Herwig Trimmel | 1982-02-23 |
| 4317234 | Telephone subscriber station | Siegfried Schoen | 1982-02-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4317233 | Telephone subscriber station | Siegfried Schoen, Herwig Trimmel | 1982-02-23 |
| 4317234 | Telephone subscriber station | Siegfried Schoen | 1982-02-23 |