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 GB838318602Aexternal-prioritypatent/GB8318602D0/en
Application filed by Indep Broadcasting AuthorityfiledCriticalIndep Broadcasting Authority
Priority claimed from PCT/GB1984/000244external-prioritypatent/WO1985000492A1/en
Application grantedgrantedCritical
Publication of ATE30288T1publicationCriticalpatent/ATE30288T1/de