Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Post Office
Original Assignee
Post Office
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication of AU490159B2publicationCriticalpatent/AU490159B2/en
Priority claimed from GB2516674Aexternal-prioritypatent/GB1465329A/en
Application filed by Post OfficefiledCriticalPost Office
Publication of AU8178775ApublicationCriticalpatent/AU8178775A/en