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Priority claimed from GB838318081Aexternal-prioritypatent/GB8318081D0/en
Priority claimed from GB838318079Aexternal-prioritypatent/GB8318079D0/en
Application filed by Bohdan DrwiegafiledCriticalBohdan Drwiega
Priority claimed from EP84902796Aexternal-prioritypatent/EP0147462B1/en
Application grantedgrantedCritical
Publication of ATE30970T1publicationCriticalpatent/ATE30970T1/en