In order to create a process and a device for the monitoring and control of the flow of material in a hospital it is provided for the units generating the flow of material to each be provided with their own individual identification, for this individual identification to be read at various transit stations...http://www.google.co.uk/patents/US5996889?utm_source=gb-gplus-sharePatent US5996889 - Process and device for the monitoring and control of the flow of material in a hospital
