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 Wolter, Herbert Lubnow, Horst KraftfiledCriticalKlaus Wolter
Priority to DD20608378ApriorityCriticalpatent/DD137205A1/en
Publication of DD137205A1publicationCriticalpatent/DD137205A1/en