A multi-function transaction processing system including a transaction terminal having a data entry facility and a transaction processor, the transaction processor being communicatively associated with a control processor that defines user accounts and issues one or more authorization codes associated...http://www.google.es/patents/US20020188510?utm_source=gb-gplus-sharePatente US20020188510 - Multi-function transaction processing system
Número de solicitud: 10/120,896 Número de publicación: US 2002/0188510 A1 Fecha de presentación: 11 Abr 2002 Patente emitida: US7181416 ( Fecha de emisión 20 Feb 2007)
