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 Helmut GaertleinfiledCriticalHelmut Gaertlein
Priority to DD19783377ApriorityCriticalpatent/DD130373A1/en
Publication of DD130373A1publicationCriticalpatent/DD130373A1/en