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 Juergen Butzlaff, Ulrich Lieske, Peter Matzke, Seibel Hans Dieter, Voss Claus DieterfiledCriticalJuergen Butzlaff
Priority to DD19897677ApriorityCriticalpatent/DD138365B1/de
Publication of DD138365A1publicationCriticalpatent/DD138365A1/de
Publication of DD138365B1publicationCriticalpatent/DD138365B1/de