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 NO712871Aexternal-prioritypatent/NO130622C/no
Application filed by Celanese CorpfiledCriticalCelanese Corp
Publication of NO130972BpublicationCriticalpatent/NO130972B/no
Publication of NO130972CpublicationCriticalpatent/NO130972C/no