Within both a stocker apparatus and a method for operating the stocker apparatus there is employed, in addition to: (1) a minimum of one input/output port; (2) an array of storage locations for storing an array of work in process (WIP) product units; and (3) a random access transportation means for transporting...http://www.google.com/patents/US6516243?utm_source=gb-gplus-sharePatent US6516243 - Stocker apparatus affording manual access
