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.)
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Application filed by Indep Broadcasting AuthorityfiledCriticalIndep Broadcasting Authority
Priority claimed from PCT/GB1982/000030external-prioritypatent/WO1982002810A1/en
Application grantedgrantedCritical
Publication of ATE22766T1publicationCriticalpatent/ATE22766T1/en