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 DE2500593Aexternal-prioritypatent/DE2500593C3/de
Priority claimed from DE19752501949external-prioritypatent/DE2501949A1/de
Application filedfiledCritical
Publication of DD123869A5publicationCriticalpatent/DD123869A5/xx