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Priority claimed from GB868613262Aexternal-prioritypatent/GB8613262D0/en
Priority claimed from GB868617506Aexternal-prioritypatent/GB8617506D0/en
Application filed by Gkn Technology LtdfiledCriticalGkn Technology Ltd
Priority claimed from EP87304761Aexternal-prioritypatent/EP0248603B1/de
Application grantedgrantedCritical
Publication of ATE78763T1publicationCriticalpatent/ATE78763T1/de