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 Gerhard Haselbauer, Roland Hochmuth, Siegmar BoehmfiledCriticalGerhard Haselbauer
Priority to DD19632176ApriorityCriticalpatent/DD128725B1/en
Publication of DD128725A1publicationCriticalpatent/DD128725A1/en
Publication of DD128725B1publicationCriticalpatent/DD128725B1/en