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 Klaus Fritzsche, K Hoehne, Lutz LanglotzfiledCriticalKlaus Fritzsche
Priority to DD19410276ApriorityCriticalpatent/DD127787A1/de
Publication of DD127787A1publicationCriticalpatent/DD127787A1/de