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 Schmidt Hans Joachim, Pfennig Hans Joachim, Hubert FraniafiledCriticalSchmidt Hans Joachim
Priority to DD19647276ApriorityCriticalpatent/DD129463B1/de
Publication of DD129463A1publicationCriticalpatent/DD129463A1/de
Publication of DD129463B1publicationCriticalpatent/DD129463B1/de