Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4634809 | Terminal systems | — | 1987-01-06 |
| 4529841 | Intercept information display for a private automatic branch exchange telephone system | Jan Andersson, Valter Swedberg, Benjamin Trok | 1985-07-16 |