Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4429184 | Mitigation of faults in a telephone exchange | Per I. Holm, Ulf A. Sodermark | 1984-01-31 |
| 4354265 | Method and an apparatus for transferring digital information in a telephone system | Kjell S. Josefsson | 1982-10-12 |