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 FichtnerfiledCriticalKlaus Fichtner
Priority to DD19945977ApriorityCriticalpatent/DD131429A1/de
Publication of DD131429A1publicationCriticalpatent/DD131429A1/de