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 date
Priority claimed from CA193,591Aexternal-prioritypatent/CA1019249A/en
Application filed by IbmfiledCriticalIbm
Publication of IN140058BpublicationCriticalpatent/IN140058B/en