Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6360245 | Computerized communication system for voice and data services | Kurt Amstad | 2002-03-19 |
| 6289089 | Key telephone system with cordless terminals | — | 2001-09-11 |
| 5983096 | Communications system with mobile telephones and operating method | Peter Lietha | 1999-11-09 |