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 GB858529953Aexternal-prioritypatent/GB8529953D0/en
Priority claimed from GB868610993Aexternal-prioritypatent/GB8610993D0/en
Application filed by Wiggins Teape Group LtdfiledCriticalWiggins Teape Group Ltd
Priority claimed from EP19860309300external-prioritypatent/EP0226367B1/de
Application grantedgrantedCritical
Publication of ATE50609T1publicationCriticalpatent/ATE50609T1/de