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 GB878725164Aexternal-prioritypatent/GB8725164D0/en
Priority claimed from GB878729249Aexternal-prioritypatent/GB8729249D0/en
Priority claimed from GB888801713Aexternal-prioritypatent/GB8801713D0/en
Priority claimed from GB888813954Aexternal-prioritypatent/GB8813954D0/en
Application filed by Cogent LtdfiledCriticalCogent Ltd
Priority claimed from EP19880909114external-prioritypatent/EP0391924B1/de
Application grantedgrantedCritical
Publication of ATE74113T1publicationCriticalpatent/ATE74113T1/de