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 K StrengfiledCriticalKlaus K Streng
Priority to DD20695878ApriorityCriticalpatent/DD138050A1/de
Publication of DD138050A1publicationCriticalpatent/DD138050A1/de