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Priority claimed from GB888805047Aexternal-prioritypatent/GB8805047D0/en
Priority claimed from GB888806081Aexternal-prioritypatent/GB8806081D0/en
Application filed by Brammer J D & Son LtdfiledCriticalBrammer J D & Son Ltd
Priority claimed from EP89301747Aexternal-prioritypatent/EP0331346B1/de
Application grantedgrantedCritical
Publication of ATE96270T1publicationCriticalpatent/ATE96270T1/de