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 Eberhard HeideckfiledCriticalEberhard Heideck
Priority to DD20814278ApriorityCriticalpatent/DD138943A1/en
Publication of DD138943A1publicationCriticalpatent/DD138943A1/en