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Priority claimed from GB838312813Aexternal-prioritypatent/GB8312813D0/en
Application filed by Mk Electric LtdfiledCriticalMk Electric Ltd
Priority claimed from EP83305363Aexternal-prioritypatent/EP0106535B1/en
Application grantedgrantedCritical
Publication of ATE42874T1publicationCriticalpatent/ATE42874T1/en