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 GB848421535Aexternal-prioritypatent/GB8421535D0/en
Application filed by Unilever NvfiledCriticalUnilever Nv
Priority claimed from EP85201339Aexternal-prioritypatent/EP0173401B1/en
Application grantedgrantedCritical
Publication of ATE32549T1publicationCriticalpatent/ATE32549T1/en