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 Lothar Grunert, Arndt Seege, Herbert Kordas, Dieter WellerfiledCriticalLothar Grunert
Priority to DD20623478ApriorityCriticalpatent/DD137473B1/en
Publication of DD137473A1publicationCriticalpatent/DD137473A1/en
Publication of DD137473B1publicationCriticalpatent/DD137473B1/en