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 Siegfried Unger, Werner Zimmermann, Horst Haering, Herbert Bernhardt, Hans Brischa, Wolfgang Lemcke, Hans Poppen, Norbert Schuster, Horst Lindner, Juergen Miertzsch, Richard Koehler, Siegfried Griebenow, Schindler Horst Dieter, Guenter StirnalfiledCriticalSiegfried Unger
Priority to DD21254679ApriorityCriticalpatent/DD143268A1/de
Priority to CS214380Aprioritypatent/CS227365B1/cs
Publication of DD143268A1publicationCriticalpatent/DD143268A1/de