This invention relates to a mechanison to read and process a prepaid, flexible, magnetically coded card bearing marked sections adapted be cut off representing value used. Upon insertion into the mechanison a forward/reverse drive means takes control of the card. The card is read and a decoder processes...http://www.google.fr/patents/US4300041?utm_source=gb-gplus-shareBrevet US4300041 - Magnetic coded card acceptor
