Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6201951 | Telephone set with a detachable cordless control and display panel | Arne L. Duwaer, Antonius J. M. Hafkamp | 2001-03-13 |
| 6005924 | Combination device including fax means and telephone means and including an active fax switch | Antonius Van De Graaf, Kurt Praxl, Peter Sattler | 1999-12-21 |
| 5504807 | Telephone apparatus with a continuously-connected DC-isolated modem | Peter Sattler, Victor Kravtchenko | 1996-04-02 |