Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB8136411Aexternal-prioritypatent/GB2092797B/en
Application filed by Barcrest LtdfiledCriticalBarcrest Ltd
Priority claimed from EP19820300467external-prioritypatent/EP0060018B1/en
Application grantedgrantedCritical
Publication of ATE24363T1publicationCriticalpatent/ATE24363T1/en