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| Number | Title | Issue Date |
| 5687323 | Dual currency debit card The Currency Exchange Network transaction management and accounting system assists businesses, employees, and consumers to engage in productive economic activity that is not supported by traditional cash- and credit-based transaction systems. The system f... | 11/11/1997 |
| 5592376 | Currency and barter exchange debit card and system The Currency Exchange Network transaction management and accounting system assists businesses, employees, and consumers to engage in productive economic activity that is not supported by traditional cash- and credit-based transaction systems. The system f... | 01/07/1997 |
