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 Schroeder Hans JoachimfiledCriticalSchroeder Hans Joachim
Priority to DD19822677ApriorityCriticalpatent/DD131262A1/de
Publication of DD131262A1publicationCriticalpatent/DD131262A1/de