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 DE2025238Aexternal-prioritypatent/DE2025238B2/en
Application filed by DegussafiledCriticalDegussa
Publication of TR16800ApublicationCriticalpatent/TR16800A/en