Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5657373 | Digital mobile telephone system in which each subscriber is assigned a telephone number and several subscriber identity module (SIM) cards | Jan Hermansson, Christer Mansson, Zeth Nystrom, Bo Karlsson, Christer Palmgren +2 more | 1997-08-12 |