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Priority claimed from GB868611642Aexternal-prioritypatent/GB8611642D0/en
Priority claimed from GB868619048Aexternal-prioritypatent/GB8619048D0/en
Application filed by Secretary Trade Ind BritfiledCriticalSecretary Trade Ind Brit
Priority claimed from EP19870902664external-prioritypatent/EP0307399B1/de
Application grantedgrantedCritical
Publication of ATE62888T1publicationCriticalpatent/ATE62888T1/de