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 Walter Kleinsteuber, Gerhard Wiederhold, Max SchubertfiledCriticalWalter Kleinsteuber
Priority to DD20412978ApriorityCriticalpatent/DD135018A1/en
Publication of DD135018A1publicationCriticalpatent/DD135018A1/en