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
Application filed by Ici PlcfiledCriticalIci Plc
Priority claimed from EP81301359Aexternal-prioritypatent/EP0038136B1/de
Application grantedgrantedCritical
Publication of ATE13702T1publicationCriticalpatent/ATE13702T1/de