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 Arno Dreyer, Adolf Schaffranek, Eberhard Nelle, Schulz Dieter, Ujma Juergen, Scharfe Gunter, Keller Heinz, Hollstein Dietrich, Thomsoe GuenterfiledCriticalArno Dreyer
Priority to DD20212777ApriorityCriticalpatent/DD134342A1/de
Publication of DD134342A1publicationCriticalpatent/DD134342A1/de