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 Erhard Bauer, Ewald ZinkfiledCriticalErhard Bauer
Priority to DD19703077ApriorityCriticalpatent/DD130073A1/en
Publication of DD130073A1publicationCriticalpatent/DD130073A1/en