A conditional purchase offer (CPO) management system, including bounce back capability, provides for receiving CPOs from one or more customers, such as airline passengers, and for evaluating the received CPOs against a number of CPO rules defined by a plurality of sellers, such as airlines, to determine...http://www.google.de/patents/US7848940?utm_source=gb-gplus-sharePatent US7848940 - Method, system and apparatus to facilitate conditional purchase orders with bounce back functionality
