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Priority claimed from GB858508979Aexternal-prioritypatent/GB8508979D0/en
Application filed by Walker Tridex LtdfiledCriticalWalker Tridex Ltd
Priority claimed from EP19860302455external-prioritypatent/EP0196924B1/en
Application grantedgrantedCritical
Publication of ATE58338T1publicationCriticalpatent/ATE58338T1/en