A machine from which a customer can selectably purchase or rent a videocassette or other such product, e.g., blank videotapes, music disks, and the like, or return a previously rented videocassette. The machine comprises videocassette storage device for storing a plurality of videocassettes or other...http://www.google.co.uk/patents/US4839505?utm_source=gb-gplus-sharePatent US4839505 - Apparatus and method for storing and retrieving articles
