Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4757186 | Method which allows continued use of a credit card which is expired in time or value units | Wolfgang Heberle | 1988-07-12 |
| 4746786 | Method and apparatus for evaluating units stored on credit cards | Wolfgang Heberle | 1988-05-24 |