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Priority claimed from GB858518579Aexternal-prioritypatent/GB8518579D0/en
Priority claimed from GB858526734Aexternal-prioritypatent/GB8526734D0/en
Application filed by May & Baker LtdfiledCriticalMay & Baker Ltd
Priority claimed from EP86305592Aexternal-prioritypatent/EP0210818B1/en
Application grantedgrantedCritical
Publication of ATE57459T1publicationCriticalpatent/ATE57459T1/en