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Priority claimed from GB848408518Aexternal-prioritypatent/GB8408518D0/en
Priority claimed from GB848422959Aexternal-prioritypatent/GB8422959D0/en
Application filed by Michael James SampsonfiledCriticalMichael James Sampson
Priority claimed from EP85302183Aexternal-prioritypatent/EP0162551B1/de
Application grantedgrantedCritical
Publication of ATE71251T1publicationCriticalpatent/ATE71251T1/de