Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5991412 | Method for protectedly debiting an electronic payment means | Jelle Wissenburgh, Johannes Brehler, Frank Muller, Martin Klass De Lange, Albertus Feiken | 1999-11-23 |
| 5914471 | Method and apparatus for recording usage data of card operated devices | — | 1999-06-22 |