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Priority claimed from GB868609920Aexternal-prioritypatent/GB8609920D0/en
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Application filed by Gkn Technology LtdfiledCriticalGkn Technology Ltd
Priority claimed from EP87303375Aexternal-prioritypatent/EP0243102B1/de
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Publication of ATE74076T1publicationCriticalpatent/ATE74076T1/de