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 Vaclav Krulich, Radomir Ing Csc Krasa, Jan Ptacek, Zdenek JozafiledCriticalVaclav Krulich
Priority to CS865005ApriorityCriticalpatent/CS261033B1/en
Publication of CS500586A1publicationCriticalpatent/CS500586A1/en
Publication of CS261033B1publicationCriticalpatent/CS261033B1/en