Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6441891 | System for detecting a foreign object attached to a bill passing through a bill validator | Mark H. Leibu | 2002-08-27 |
| 6427912 | Off-line credit card transaction system and method for vending machines | — | 2002-08-06 |