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Priority claimed from GB878714156Aexternal-prioritypatent/GB8714156D0/en
Priority claimed from GB878714157Aexternal-prioritypatent/GB8714157D0/en
Application filed by Secr Defence BritfiledCriticalSecr Defence Brit
Priority claimed from EP88305440Aexternal-prioritypatent/EP0295878B1/en
Application grantedgrantedCritical
Publication of ATE69622T1publicationCriticalpatent/ATE69622T1/en