A cash dispensing machine includes a validation unit 13 for validating cash inserted through an insertion slot 8, a detachable storage unit 30 for storing cash validated by the validation unit 13, communication means provided in each of the validation unit and the storage unit, for transmitting and receiving...http://www.google.com/patents/US7004381?utm_source=gb-gplus-sharePatent US7004381 - Cash dispensing machine
