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 Heilmann Hans Peter, Jiri Plichta, Reiner FritzschfiledCriticalHeilmann Hans Peter
Priority to DD20149477ApriorityCriticalpatent/DD133520B1/en
Publication of DD133520A1publicationCriticalpatent/DD133520A1/en
Publication of DD133520B1publicationCriticalpatent/DD133520B1/en