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 Hans Kaufmann, Manfred Schirmer, Peter Dalluegge, Peter KunzefiledCriticalHans Kaufmann
Priority to DD19742977ApriorityCriticalpatent/DD130779B1/en
Publication of DD130779A1publicationCriticalpatent/DD130779A1/en
Publication of DD130779B1publicationCriticalpatent/DD130779B1/en