A mobile WIP parts tracking system useful in semi-conductor fabrication operations, includes an identifying tag fixed to each of a plurality of parts containers, and a tag reader mounted on the head of a robotic carrier which delivers the containers to and removes the containers from any or a plurality...http://www.google.fr/patents/US6060992?utm_source=gb-gplus-shareBrevet US6060992 - Method and apparatus for tracking mobile work-in-process parts
Method and apparatus for tracking mobile work-in-process parts