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
Application filed by Plessey OverseasfiledCriticalPlessey Overseas
Priority claimed from PCT/GB1983/000220external-prioritypatent/WO1984001057A1/en
Application grantedgrantedCritical
Publication of ATE31999T1publicationCriticalpatent/ATE31999T1/de