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 Gerhard Wuerker, Dieter Boehm, Albrecht VogesfiledCriticalGerhard Wuerker
Priority to DD19532676ApriorityCriticalpatent/DD128000A1/en
Publication of DD128000A1publicationCriticalpatent/DD128000A1/en