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Priority claimed from GB838328978Aexternal-prioritypatent/GB8328978D0/en
Priority claimed from GB848417906Aexternal-prioritypatent/GB8417906D0/en
Application filed by Beale Int TechnologyfiledCriticalBeale Int Technology
Priority claimed from EP84307497Aexternal-prioritypatent/EP0140712B1/en
Application grantedgrantedCritical
Publication of ATE45844T1publicationCriticalpatent/ATE45844T1/en