Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6418422 | Postage meter machine with a chip card write/read unit and method for operating same | Stephan Guenther | 2002-07-09 |
| 6199752 | Postage meter machine with a chip card write/read unit and method for operating same | Ludger Bornemann, Stephan Guenther, Wilfried Kopanski | 2001-03-13 |
| 5805711 | Method of improving the security of postage meter machines | Harald Windel, Frank Reisinger, Claus Freytag, Ralf Kubatzki, Marcus Hansel +5 more | 1998-09-08 |
| 5734571 | Method for modifying data loaded into memory cells of an electronic postage meter machine | Joachim Pilz | 1998-03-31 |