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 Wolfgang Hahnl, Eckhard NaumannfiledCriticalWolfgang Hahnl
Priority to DD20089977ApriorityCriticalpatent/DD133108A1/de
Publication of DD133108A1publicationCriticalpatent/DD133108A1/de